Photography
Most photographs are dedicated to the public domain under CC0, sourced via Unsplash and mirrored on Wikimedia Commons. A few are used under CC BY-SA and are credited with their creator below. These credits are provided for transparency, and so any file can be traced if its status ever changes.
- guppy.jpg — Breeding guppy — Marrabbio2 (CC BY-SA 4.0)
- nano-tank.jpg — Planted Nano Aquarium — Tdwittt (CC0)
- planted-tank.jpg — Freshwater aquarium with plants and small fish — Netha Hussain (CC0)
- test-tubes.jpg — Test tube rack — Shixart1985 (CC BY 2.0)
- tap-water.jpg — Kitchen sink and tap (137906641) — Jan Bambach (CC BY-SA 3.0)
- aquarium-salt.jpg — Common salt — Edal Anton Lefterov (CC BY-SA 3.0)
- quarantine-tank.jpg — The Complete Aquarium Book (1936) — Internet Archive Book Images (Public domain)
- gravel-vacuum.jpg — The Complete Aquarium Book (1936) — Internet Archive Book Images (Public domain)
- water-change.jpg — Japanese fire-bellied newt, Gifu World Fresh Water Aquarium — Alpsdake (CC BY-SA 4.0)
- thermometer.jpg — Thermometer — Nino Barbieri (CC BY 2.5)
- betta-splendens.jpg — Betta — Sundar Karthikeyan (CC BY 4.0)
- poecilia-reticulata.jpg — Guppy (Poecilia reticulata) — Sky99 (CC BY-SA 3.0)
- xiphophorus-maculatus.jpg — Southern platyfish — Gourami Watcher (CC BY-SA 3.0)
- poecilia-sphenops.jpg — Pond (Poecilia sphenops listing) — Flocci Nivis (CC BY 4.0)
- paracheirodon-innesi.jpg — Neon tetra — Benoît Prieur (CC0)
- paracheirodon-axelrodi.jpg — Cardinal tetra — Juan R. Lascorz (CC BY-SA 3.0)
- corydoras-paleatus.jpg — Peppered cory — Sychriscar (CC BY-SA 3.0)
- trigonostigma-heteromorpha.jpg — Harlequin rasbora — Juan R. Lascorz (CC BY-SA 3.0)
- danio-rerio.jpg — Zebrafish — Karol Głąb (CC BY-SA 3.0)
- tanichthys-albonubes.jpg — White cloud mountain minnow — Mpenny39 (CC BY-SA 3.0)
- pterophyllum-scalare.jpg — Marble angelfish — Fish-Hed (CC BY-SA 3.0)
- mikrogeophagus-ramirezi.jpg — Electric blue ram cichlids — BlueRam92 (CC BY-SA 4.0)
- ancistrus-cirrhosus.jpg — Ancistrus dolichopterus type — Rudolf Kner (Public domain)
- otocinclus-vittatus.jpg — Otocinclus, Río Pilcomayo — Brancolini et al. (CC BY 4.0)
- neocaridina-davidi.jpg — Blue Neocaridina davidi shrimp — TonyZimbinski (CC BY-SA 4.0)
- nerite-snail.jpg — Vittina natalensis shell, Naturalis — Reeve (CC0)
- group-banner.jpg — Beauty of freshwater fish — Tatyana Kuznecova (CC BY 4.0)
- black-widow-tetra.jpg — Black widow tetra — Juan R. Lascorz (CC BY-SA 3.0)
- rummy-nose-tetra.jpg — Rummy-nose tetra — NasserHalaweh (CC BY-SA 4.0)
- glowlight-tetra.jpg — Glowlight tetra — h080 (CC BY-SA 2.0)
- x-ray-tetra.jpg — X-ray tetra (Pristella maxillaris) — Richard Bartz (CC BY-SA 2.5)
- ember-tetra.jpg — Aquarium, Paris — Chabe01 (CC BY-SA 4.0)
- chili-rasbora.jpg — Chili rasbora (Boraras brigittae) — Atulbhats (CC BY-SA 4.0)
- panda-cory.jpg — Panda cory — Giniro (CC BY 3.0)
- sterbai-cory.jpg — Sterba's cory — Corydoras-adolfoi (CC BY-SA 4.0)
- kuhli-loach.jpg — Kuhli loach (juvenile) — Robert Mollik (CC BY-SA 3.0)
- pearl-gourami.jpg — Pearl gourami aquarium — Rakesh (CC BY-SA 2.0)
- honey-gourami.jpg — Honey gourami male — Made be Uploader (CC BY-SA 3.0)
- kribensis.jpg — Kribensis with fry — Soldering (CC BY-SA 3.0)
- apistogramma-cockatoo.jpg — Cockatoo cichlid male — Waylah (CC BY-SA 3.0)
- endlers-livebearer.jpg — Endler's livebearer (Poecilia wingei) — Dgrummon (CC BY-SA 4.0)
- swordtail.jpg — Swordtail — Bartosz Kowalewicz (CC BY-SA 3.0)
- amano-shrimp.jpg — Amano shrimp with eggs — John Stockla (CC BY-SA 4.0)
- betta-splendens-2.jpg — Siamese fighting fish (Betta splendens) female orange — Bernard Ladenthin (CC BY 4.0)
- betta-splendens-3.jpg — Male Betta -34245661920 — ivabalk https://pixabay.com/pt/users/ivabalk-782511/ (CC0)
- poecilia-reticulata-2.jpg — Poecilia reticulata Fry DSC04357 nevit — Nevit Dilmen (talk) (CC BY-SA 3.0)
- poecilia-reticulata-3.jpg — Poecilia retic 090519-8688 kdBdk — Wibowo Djatmiko (Wie146) (CC BY-SA 3.0)
- xiphophorus-maculatus-2.jpg — Xiphophorus maculatus Platy — Usien (CC BY-SA 4.0)
- xiphophorus-maculatus-3.jpg — Xiphophorus maculatus young — Ude (CC BY-SA 3.0)
- poecilia-sphenops-2.jpg — Poecilia sphenops 9830047 — Tereso Hernández Morales (CC BY 4.0)
- poecilia-sphenops-3.jpg — PoeciliaSphenops — Dnoerholm (CC BY-SA 4.0)
- paracheirodon-innesi-2.jpg — Paracheirodon innesi neon tetra — SOK (CC BY-SA 4.0)
- paracheirodon-innesi-3.jpg — NeonTetra — Corpse89 (CC BY-SA 3.0)
- paracheirodon-axelrodi-2.jpg — Cardinal Paracheirodon axelrodi (3) — CHUCAO (CC BY-SA 3.0)
- paracheirodon-axelrodi-3.jpg — Cardinal Paracheirodon axelrodi (1) — CHUCAO (CC BY-SA 3.0)
- corydoras-paleatus-2.jpg — Corydoras paleatus matt — Marrabbio2 (CC BY-SA 3.0)
- corydoras-paleatus-3.jpg — Corydoras paleatus 04 — Gourami Watcher (CC BY-SA 3.0)
- trigonostigma-heteromorpha-3.jpg — Trigonostigma heteromorpha breeding3new — Stefan Maurer (CC BY-SA 2.0)
- danio-rerio-2.jpg — Danio rerio lab left — Pogrebnoj-Alexandroff (CC BY-SA 3.0)
- danio-rerio-3.jpg — Danio rerio — Pogrebnoj-Alexandroff (CC BY-SA 3.0)
- tanichthys-albonubes-2.jpg — White Cloud Mountain Minnow (Tanichthys albonubes) — Corydoras-adolfoi (CC BY-SA 4.0)
- tanichthys-albonubes-3.jpg — White Cloud Mountain Minnow (Tanichthys albonubes) female in front — Corydoras-adolfoi (CC BY-SA 4.0)
- pterophyllum-scalare-2.jpg — Pterophyllum scalare A742576 — Rjcastillo (CC BY 4.0)
- pterophyllum-scalare-3.jpg — Pterophyllum scalare map — Ubs6u!d-pongsakorn (CC BY-SA 4.0)
- mikrogeophagus-ramirezi-2.jpg — Mikrogeophagus ramirezi male — Sven Kullander (CC BY-SA 4.0)
- mikrogeophagus-ramirezi-3.jpg — Mikrogeophagus ramirezi, 2017 — Eric Mengel (Public domain)
- ancistrus-cirrhosus-2.jpg — Albino Bristlenose Pleco Fry — Fish-Hed (CC BY-SA 3.0)
- ancistrus-cirrhosus-3.jpg — Bristlenose Pleco - Chester Zoo — Kervate (CC BY-SA 3.0)
- otocinclus-vittatus-2.jpg — Otocinclus Catfish (Otocinclus sp.) on Malaysian driftwood 3 — Evan Baldonado (CC BY 4.0)
- otocinclus-vittatus-3.jpg — Otocinclus Catfish (Otocinclus sp.) on Malaysian driftwood — Evan Baldonado (CC BY 4.0)
- neocaridina-davidi-2.jpg — Blue dream Neocaridina davidi — Roth 1312 (CC BY 4.0)
- nerite-snail-2.jpg — Neritina turrita 02 — H. Zell (CC BY-SA 3.0)
- nerite-snail-3.jpg — Zebra Nerite Snail (Neritina natalensis sp. zebra) — Evan Baldonado (CC BY 4.0)
- black-widow-tetra-2.jpg — Gymnocorymbus ternetzi var. velitail — Marrabbio2 (CC BY-SA 3.0)
- black-widow-tetra-3.jpg — Żałobniczka, czarna tetra (Gymnocorymbus ternetzi ) — Alter welt (CC BY-SA 4.0)
- rummy-nose-tetra-2.jpg — Petitella rhodostomus (Hemigrammus rhodostomus), 2013 — Tomasz Lachowicz (CC BY-SA 3.0)
- rummy-nose-tetra-3.jpg — Rummy-nose tetra in the Leningrad zoo — Горбунова М.С. (CC BY-SA 4.0)
- glowlight-tetra-3.jpg — Tetra žhavá 3 — Jofre (Public domain)
- x-ray-tetra-2.jpg — Pristella tetra1 — Debivort (CC BY-SA 3.0)
- x-ray-tetra-3.jpg — The complete aquarium book; the care and breeding of goldfish and tropical fishes (1936) (20049227934) — Internet Archive Book Images (Public domain)
- ember-tetra-2.jpg — Hyphessobrycon amandae A — Klaus Rudloff (CC BY-SA 4.0)
- ember-tetra-3.jpg — Hyphessobrycon amandae - AquaPorteDoree 02 — Cedricguppy - Loury Cédric (CC BY-SA 4.0)
- chili-rasbora-2.jpg — Nano-Aquarium mit Boraras brigittae — VivienneHarper (CC BY-SA 3.0)
- chili-rasbora-3.jpg — Boraras brigittae 2 — Atulbhats (CC BY-SA 4.0)
- panda-cory-2.jpg — Corydoras panda paar — MGorges at German Wikipedia (CC BY-SA 3.0 de)
- panda-cory-3.jpg — Corydoras panda 1 — Chrischang (CC BY-SA 2.0)
- sterbai-cory-2.jpg — Corydoras Sterbai (clipped) — Matthew Mannell (Public domain)
- kuhli-loach-2.jpg — Pangio — The original uploader was Marrabbio2 at Italian Wikipedia. (CC BY-SA 3.0)
- kuhli-loach-3.jpg — Kuhli loach (CC BY-SA 3.0)
- pearl-gourami-2.jpg — Trichopodus leerii h080 — h080 (CC BY-SA 2.0)
- pearl-gourami-3.jpg — Trichopodus leerii in Botanic garden in Teplice (2) — Chmee2 (CC BY 3.0)
- honey-gourami-3.jpg — Honey gourami red variant — Eevaya (CC BY-SA 4.0)
- kribensis-2.jpg — Cichlidae Pelvicachromis pulcher 3 — NasserHalaweh (CC BY-SA 4.0)
- kribensis-3.jpg — Pelvicachromis pulcher (aka) — André Karwath aka Aka (CC BY-SA 2.5)
- apistogramma-cockatoo-2.jpg — Apistogramma cacatuoides double red male — Made be Uploader (CC BY-SA 3.0)
- apistogramma-cockatoo-3.jpg — Apistogramma cacatuoides Happy — Happy Birthday To You! (Public domain)
- endlers-livebearer-2.jpg — Campoma Bridge number 8 Poecilia Wingei — Dgrummon (CC BY-SA 4.0)
- endlers-livebearer-3.jpg — Wingei compared to Reticulata — Dgrummon (CC BY-SA 4.0)
- swordtail-2.jpg — Xiphophorus hellerii young male 01 — Wojciech J. Płuciennik (CC BY-SA 4.0)
- swordtail-3.jpg — Xiphophorus hellerii wagtail young 01 — Wojciech J. Płuciennik (CC BY-SA 4.0)
- amano-shrimp-2.jpg — Caridina-multidentata-ingestion — Richard Bartz, Munich Makro Freak (CC BY-SA 2.5)
- amano-shrimp-3.jpg — Caridina multidentata close2 — Richard Bartz, Munich Makro Freak (CC BY-SA 2.5)
- dwarf-gourami.jpg — Colisa lalia (Public domain)
- sparkling-gourami.jpg — Sparkling Gourami — Skeletonman1106 (CC BY-SA 4.0)
- celestial-pearl-danio.jpg — Celestial Pearl Danio — Bread962 (CC BY 4.0)
- cherry-barb.jpg — Cherry barb, Puntius titteya — Brian Gratwicke (CC BY 2.0)
- tiger-barb.jpg — A Male Tiger barb — Anandarajkumar (talk) (Uploads) (CC BY-SA 3.0)
- boesemani-rainbowfish.jpg — Boesemans Regenbogenfisch Melanotaenia boesemani Tierpark Hellabrunn-1 — Rufus46 (CC BY-SA 3.0)
- neon-dwarf-rainbowfish.jpg — Aquarium fish in plants — Paolo Neo (Public domain)
- bronze-cory.jpg — Corydoras aeneus 2 (Public domain)
- julii-cory.jpg — Callichthyidae Corydoras julii 1 — NasserHalaweh (CC BY-SA 4.0)
- clown-loach.jpg — Clown loach (Chromobotia macracanthus) — Emőke Dénes (CC BY-SA 4.0)
- dwarf-gourami-3.jpg — Trichogaster lalius 'Red' — Kennyannydenny (CC BY-SA 3.0)
- sparkling-gourami-2.jpg — Trichopsis pumila Map — Ubs6u!d-pongsakorn (CC BY-SA 4.0)
- sparkling-gourami-3.jpg — Sparkling gourami — Dezinformator15 (CC BY-SA 4.0)
- celestial-pearl-danio-3.jpg — Dánio perlové — Cassius Chaerea (CC BY-SA 4.0)
- cherry-barb-3.jpg — Puntius titteya-cherry barb — Uditha Thejan (CC BY-SA 4.0)
- tiger-barb-2.jpg — Green tiger barb — Debivort at en.wikipedia (CC BY-SA 3.0)
- tiger-barb-3.jpg — Tiger barb fish — Editor General of Wiki (CC BY-SA 4.0)
- boesemani-rainbowfish-2.jpg — Melanotaeniidae Melanotaenia boesemani 1 — NasserHalaweh (CC BY-SA 4.0)
- boesemani-rainbowfish-3.jpg — Melanotaenia boesemani in Ouwehands Dierenpark — FakirNL (CC BY-SA 4.0)
- neon-dwarf-rainbowfish-2.jpg — MELANOTAENIA PRAECOX — Leo-nie-weh-oh (Public domain)
- neon-dwarf-rainbowfish-3.jpg — Dwarf neon rainbows — Anandarajkumar at en.wikipedia (CC BY-SA 3.0)
- bronze-cory-2.jpg — Corydoras aeneus2 — Pharaoh Hound (CC BY 2.5)
- julii-cory-3.jpg — Corydoras julii h080 — h080 (CC BY-SA 2.0)
- clown-loach-2.jpg — Chromobotia macracanthus (Bleeker, 1852) Clown loach — Andrej Jakubík (CC BY-SA 4.0)
- clown-loach-3.jpg — Chromobotia macracanthus Aquarium Nancy — Gpasques (CC0)
- lemon-tetra.jpg — Citrontetra Hyphessobrycon pulchripinnis — SOK (CC BY-SA 4.0)
- serpae-tetra.jpg — Actinopterygii in the Guareí River basin 02 (1676-0611-BN-2020-1031) — Valter M. Azevedo-Santos, Fernando M. Pelicice, and Raoul Henry (CC BY 4.0)
- black-neon-tetra.jpg — 03.Hyphessobrycon herbertaxelrodi — Juan R. Lascorz (CC BY-SA 3.0)
- lambchop-rasbora.jpg — Lambchop Rasbora — Atulbhats (CC BY-SA 4.0)
- variatus-platy.jpg — Xiphophorus variatus — Fried Noodls (CC BY 4.0)
- three-spot-gourami.jpg — LK-กระดี่หม้อ — R.workoran (CC BY-SA 4.0)
- bolivian-ram.jpg — A Bolivian Ram - Mikrogeophagus altispinosus — Corpse89 (CC BY-SA 3.0)
- convict-cichlid.jpg — Amatitlania nigrofasciata 344412441 — geosesarma (CC BY 4.0)
- crystal-red-shrimp.jpg — Caridina-cf-cantonensis-Panda — Marcus Hafermann (CC BY-SA 3.0)
- mystery-snail.jpg — Pomacea bridgesii marfil — Angel Ramos (CC BY-SA 4.0)
- lemon-tetra-3.jpg — Lemon Tetras — Bloopityboop (CC BY-SA 4.0)
- serpae-tetra-2.jpg — Hyphessobrycon (10.3897-zse.95.34069) Figure 2 — Guimarães EC, Silva de Brito P, Feitosa LM, Carvalho Costa LF, Ottoni FP (2019) A new cryptic species of Hyphessobrycon Durbin, 1908 (Characiformes, Characidae) from the Eastern Amazon, revealed by integrative taxonomy. Zoosystematics and Evolution 95(2): 345-360. https://doi.org/10.3897/zse.95.34069 (CC BY 4.0)
- serpae-tetra-3.jpg — Hyphessobrycon eques 347048436 — Douglas Lopes (CC BY 4.0)
- black-neon-tetra-2.jpg — Black-Neon-Tetra — Atulbhats (CC BY-SA 4.0)
- black-neon-tetra-3.jpg — Hyphessobrycon herbertaxelrodi Gratwicke — Brian Gratwicke (CC BY 2.0)
- lambchop-rasbora-2.jpg — Trigonostigma espei 2023 — AverageWalrus (CC BY-SA 4.0)
- lambchop-rasbora-3.jpg — Trigonostigma espei Thai — R.workoran (CC BY-SA 4.0)
- variatus-platy-2.jpg — Xiphophorus variatus 16996626 — Adam Cohen (CC BY 4.0)
- three-spot-gourami-2.jpg — Trichopodus trichopterus (3 spot gourami, Philippines) 02 — Obsidian Soul (CC0)
- three-spot-gourami-3.jpg — Trichopodus trichopterus 99295059 — Astri Permata Sari (CC BY 4.0)
- bolivian-ram-2.jpg — Mikrogeophagus altispinosus — Pia Helminen (CC BY 2.5)
- convict-cichlid-2.jpg — Amatitlania nigrofasciata 344412469 — geosesarma (CC BY 4.0)
- crystal-red-shrimp-2.jpg — Caridina cantonensis sp "blue" — LaesaMajestas (CC BY-SA 3.0)
- crystal-red-shrimp-3.jpg — Female Caridina cantonensis sp "blue" with eggs — LaesaMajestas (CC BY-SA 3.0)
- mystery-snail-2.jpg — Pomacea diffusa 02 — H. Zell (CC BY-SA 3.0)
- mystery-snail-3.jpg — Pomacea diffusa — Gabriel Resende Veiga (CC BY-SA 4.0)
- fancy-goldfish.jpg — A shoal of goldfish in the pond of Petah Tikva park - 01 — Юкатан (CC BY-SA 4.0)
- hillstream-loach.jpg — Hillstream Loach — Spiketooth (CC BY-SA 3.0)
- rosy-barb.jpg — 1 Rosy barb (Pethia conchonius) near 3 bronze corydoras (Corydoras aeneus) in a fish tank — 235x (CC BY 4.0)
- yoyo-loach.jpg — Botia almorhae Day 154 — Francis Day (Public domain)
- zebra-loach.jpg — Botia striata — Lerdsuwa (CC BY-SA 3.0)
- diamond-tetra.jpg — A diamond tetra fish — Michael Palmer (CC BY-SA 4.0)
- penguin-tetra.jpg — 01.Thayeria boehlkei — Juan R. Lascorz (CC BY-SA 3.0)
- scissortail-rasbora.jpg — Scissor-tailed rasbora — R.workoran (CC BY-SA 4.0)
- sailfin-molly.jpg — Poecilia latipinna, Big Cypress National Preserve, Ochopee, FL, US imported from iNaturalist photo 266948484 — (c) Nick Tobler (Cowturtle), some rights reserved (CC BY) (CC BY 4.0)
- odessa-barb.jpg — Odessa barb male — Anandarajkumar at English Wikipedia (CC BY-SA 3.0)
- fancy-goldfish-2.jpg — Fountain with goldfish in Jardí del Bisbe 02 — Kritzolina (CC BY-SA 4.0)
- fancy-goldfish-3.jpg — Carassius auratus black telescope — IssamBarhoumi (CC BY-SA 4.0)
- hillstream-loach-2.jpg — Sewellia lineolata - Pracht-Flossensauger — 5snake5 (CC0)
- hillstream-loach-3.jpg — セウェルリア — Mistumitsu (CC BY-SA 4.0)
- rosy-barb-2.jpg — Puntius conchonius — Marrabbio2 (CC BY-SA 4.0)
- rosy-barb-3.jpg — Pethia conchonius Prachtbarbe — Usien (CC0)
- odessa-barb-2.jpg — Pethia padamya - male - AquaPorteDoree 03 — Cedricguppy - Loury Cédric (CC BY-SA 4.0)
- odessa-barb-3.jpg — Pethia padamya - femelle - AquaPorteDoree 02 — Cedricguppy - Loury Cédric (CC BY-SA 4.0)
- yoyo-loach-3.jpg — Botia almorhae 雷霆鼠 - panoramio — lienyuan lee (CC BY 3.0)
- zebra-loach-2.jpg — Botia striata2 — Hugues CREPIN (CC BY-SA 3.0)
- zebra-loach-3.jpg — Botia striata in a home aquarium — Actuallychaos (CC BY-SA 4.0)
- diamond-tetra-2.jpg — Tetra diamante (Moenkhausia pittieri) — Petruss (CC BY-SA 4.0)
- diamond-tetra-3.jpg — Moenkhausia pittieri young fish in aquarium — SOK (CC BY-SA 4.0)
- penguin-tetra-2.jpg — 03.Thayeria boehlkei — Juan R. Lascorz (CC BY-SA 3.0)
- sailfin-molly-2.jpg — Poecilia latipinna 170400954 — Tia Offner (CC BY 4.0)
- sailfin-molly-3.jpg — Poecilia latipinna 316789286 — Nick Loveland (CC0)
- aquarium-filter.jpg — Eheim type 2011, pump 101101993-4232 — Raimond Spekking (CC BY-SA 4.0)
- filter-media.jpg — Eheim type 2011, pump 101101993-4232 — Raimond Spekking (CC BY-SA 4.0)
- lab-test.jpg — 3D printed E8Z-E test tube racks lab table — Frank Markesteijn (CC BY-SA 4.0)
- oranda-goldfish.jpg — Carassius auratus (5407057060) — Eva Rinaldi (CC BY-SA 2.0)
- bleeding-heart-tetra.jpg — Hyphessobrycon erythrostigma - Kirschflecksalmer — 5snake5 (CC0)
- congo-tetra.jpg — Alestidae Phenacogrammus interruptus 4 — NasserHalaweh (CC BY-SA 4.0)
- australian-rainbowfish.jpg — Murray River Rainbow Fish — Bahudhara (CC BY-SA 3.0)
- threadfin-rainbowfish.jpg — Iriatherina Werneri-Male group (CC BY-SA 2.5)
- keyhole-cichlid.jpg — Cleithracara maronii-1 — User:D.W. (Public domain)
- firemouth-cichlid.jpg — Barbonymus schwanenfeldii & Thorichthys meeki — Parkenings (CC BY-SA 4.0)
- clown-pleco.jpg — Clown Pleco in home aquaria — Realfakebezalbob (CC BY-SA 4.0)
- ramshorn-snail.jpg — Planorbella Tamiami — RealGatba (CC BY-SA 4.0)
- oranda-goldfish-3.jpg — (Carassius auratus) Red cap oranda at Visakhapatnam, India 02 — Adityamadhav83 (CC BY-SA 3.0)
- bleeding-heart-tetra-3.jpg — Hyphessobrycon socolofi (BMNH 1977.1.19.1-2) — Trustees of the Natural History Museum (CC0)
- congo-tetra-3.jpg — Phenacogrammus interruptus 1 — 7TP (Krzysztof Bartosik) (CC BY-SA 4.0)
- australian-rainbowfish-2.jpg — Murray River rainbowfish (Melanotaenia fluviatilis) at Sea Life Melbourne Aquarium — Ethmostigmus (CC BY-SA 4.0)
- australian-rainbowfish-3.jpg — Murray River rainbowfish (Melanotaenia fluviatilis) juveniles at Sea Life Melbourne Aquarium — Ethmostigmus (CC BY-SA 4.0)
- threadfin-rainbowfish-2.jpg — Iriatherina Werneri-Yellow Finned Male (CC BY-SA 2.5)
- threadfin-rainbowfish-3.jpg — Iriatherina werneri — NRJMelvinT (CC BY-SA 4.0)
- keyhole-cichlid-2.jpg — Cleithracara maronii-3 — User:D.W. (Public domain)
- firemouth-cichlid-2.jpg — Thorichthys meeki - Wilhelma 01 — H. Zell (CC BY-SA 3.0)
- firemouth-cichlid-3.jpg — Thorichthys meeki - Feuermaulbuntbarsch — 5snake5 (CC0)
- ramshorn-snail-2.jpg — Planorbella duryi Nest — Dat doris (CC BY-SA 4.0)
- ramshorn-snail-3.jpg — Planorbella duryi 08 — Dat doris (CC BY-SA 4.0)
- skunk-cory.jpg — Corydoras arcuatus — Pia Helminen (CC BY 2.5)
- g-20gal.jpg — Aquascaping Team Planting Aquarium Hardscape — Abhik.Mazumdar.73 (CC BY 4.0)
- g-cloudy.jpg — Georgia Aquarium Tropical Tank — Diliff (CC BY 2.5)
- g-algae.jpg — Amaterske akvarium — User Aleš Tošovský (Public domain)
- g-ich.jpg — ClownLoachesWithIch — ML5 at English Wikipedia (Public domain)
- g-plants.jpg — An Aquascapist Adjusting Aquarium Hardscape with Mermaid Statue — Abhik.Mazumdar.73 (CC BY 4.0)
- g-feed.jpg — 2011-05-14 feeding the fish at National Museum of Marine Biology and Aquarium — Michael Cannon (CC BY-SA 2.0)
- g-accl.jpg — A freshwater aquarium containing plants and small fish — Netha Hussain (CC0)
- g-nitrate.jpg — A laboratory apparatus for holding test tubes — Goodymeraj (CC0)
- g-filter.jpg — Fluidized — Jmak (CC BY-SA 3.0)
- pearl-danio.jpg — Danio albolineatus — Sc99cs at English Wikipedia (Original text: Steven Coburn sc99cs) (Public domain)
- pygmy-cory.jpg — C.pygmaeus — AquaTuer (CC BY-SA 4.0)
- pictus-catfish.jpg — Aquatic Biodiversity in the Amazon (1020205-f6) — James S. Albert et. al. (CC BY 3.0)
- dwarf-chain-loach.jpg — Schachbrettschmerle — Stefan Maurer (CC BY-SA 2.0)
- blue-acara.jpg — Aequidens Pulcher Weibchen zur Paarungszeit (im Hintergrund Männchen) — Eckol (CC BY-SA 3.0)
- pearl-danio-2.jpg — Danio albolineatus 254555035 — Павлик Лисицын (CC BY 4.0)
- pygmy-cory-2.jpg — Corydoras pygmaeus — Sesarma (CC BY-SA 3.0)
- pictus-catfish-2.jpg — Pimelodus pictus lateral — 5snake5 (CC0)
- pictus-catfish-3.jpg — Pimelodus pictus 25cm — Oeoi (CC BY-SA 4.0)
- dwarf-chain-loach-3.jpg — Yasuhikotakia nigrolineata — Lerdsuwa (CC BY-SA 3.0)
- blue-acara-2.jpg — Andinoacara pulcher spec. neonblue - submissive color — 5snake5 (CC0)
- blue-acara-3.jpg — Andinoacara pulcher 71043969 — Kristof Zyskowski (CC BY 4.0)
- gc-ph.jpg — 786 CES perfects purifying proficiency (6199874) — U.S. Air Force photo by Senior Airman Milton Hamilton (Public domain)
- gc-heater.jpg — Grzałka do akwarium — Ewkaa (CC BY-SA 3.0)
- gc-light.jpg — Night light aquarium lamp toy — Artemhao (CC0)
- gd-testing.jpg — Jar testing equipment for testing water quality. (15052115711) — USEPA Environmental-Protection-Agency (Public domain)
- gd-finrot.jpg — Open aquarium with gorgeous tropical fish, Key West, Florida — Boston Public Library (CC BY 2.0)
- gd-dying.jpg — Freshwater aquarium — Ranjith-chemmad (CC BY-SA 4.0)
- gd-air.jpg — Aquarium-air-pump — User:Corydoras-adolfoi (CC BY-SA 4.0)
- gd-10best.jpg — Okinawa Aquarium — Jordy Meow (CC BY-SA 3.0)
- gd-kits.jpg — Three different 3D printed test tube racks lab table — Frank Markesteijn (CC BY-SA 4.0)
- gd-move.jpg — Water for use in aerial firefighting being carried in a bucket attached to a MChS Mil Mi-26 heavylift helicopter — Yuri Smityuk (CC BY-SA 4.0)
- gd-breed.jpg — Poecilia reticulata Fry DSC04357 nevit — Nevit Dilmen (talk) (CC BY-SA 3.0)
- ge-light.jpg — Aquarium fish in green aqua plants — Paolo Neo (Public domain)
- ge-co2.jpg — Bubbles in the Gelenberger Quelle Mofette — Sten van Houwelingen (CC BY 4.0)
- ge-velvet.jpg — Fountain with goldfish in Jardí del Bisbe 03 — Kritzolina (CC BY-SA 4.0)
- ge-snail.jpg — Theodoxus fluviatilis shells and of other freshwater gastropod molluscs — Albarubescens (CC BY 4.0)
- ge-hard.jpg — Hard Water Calcification — Bbypnda (CC BY-SA 3.0)
- ge-cycle.jpg — The complete aquarium book; the care and breeding of goldfish and tropical fishes (1936) (20484847619) — Internet Archive Book Images (Public domain)
- ge-nano.jpg — Nature Aquarium Aquascape — Dileepkumardr (CC0)
- ge-dropsy.jpg — Goldfish in Fish Tank (cropped) — Kong of Lasers (CC BY-SA 4.0)
- gf-columnaris.jpg — Forelle mit Pilzerkrankung — Hans Lauterbach Furchenstein (CC BY-SA 4.0)
- gf-popeye.jpg — Pristis pristis - Georgia Aquarium Jan 2006 — Diliff (CC BY 2.5)
- gf-lowph.jpg — Sodium aluminium ortho-silicate — Claudio Pistilli (CC BY-SA 4.0)
- gf-ro.jpg — Reverse osmosis desalination plant — James Grellier (CC BY-SA 3.0)
- gf-substrate.jpg — Aquarium gravel — Green Yoshi (CC BY 3.0)
- gf-tds.jpg — Water Pressure Gauge (2862206356) — Roger Braunstein (CC BY 2.0)
- gf-sump.jpg — Georgia Aquarium - Giant Grouper — Diliff (CC BY 2.5)
- gf-compat.jpg — View of a fish tank from a far — Zmu'az4Z (CC BY-SA 4.0)
- gf-sex.jpg — Guppy Poecilia reticulata — Holger Krisp (CC BY 3.0)
- chocolate-gourami.jpg — Chocolate gourami, Sphaerichthys osphromenoides — Brian Gratwicke (CC BY 2.0)
- comet-goldfish.jpg — Carassius auratus auratus (goldfish) 2 — James St. John (CC BY 2.0)
- comet-goldfish-2.jpg — Carassius wild golden fish 2013 G1 — George Chernilevsky (Public domain)
- comet-goldfish-3.jpg — Fantail Goldfish Carrot — Ry362 (CC BY-SA 3.0)
- discus.jpg — Symphysodon aequifasciatus - Karlsruhe Zoo 04 — H. Zell (CC BY-SA 3.0)
- discus-2.jpg — Symphysodon, Acará disco A74260220241123 — Rjcastillo (CC BY-SA 4.0)
- discus-3.jpg — Symphysodon aequifasciatus - Karlsruhe Zoo 03 — H. Zell (CC BY-SA 3.0)
- oscar.jpg — Astronotus ocellatus — Jón Helgi Jónsson (Amything) (CC BY-SA 3.0)
- oscar-2.jpg — A photo of an oscar fish (Astronotus ocellatus) in a aquarium — Retro Lenses (CC BY 4.0)
- oscar-3.jpg — Astronotus ocellatus - Karlsruhe Zoo 01 — H. Zell (CC BY-SA 3.0)
- gardneri-killifish.jpg — Fundulopanchax gardneri — Alexander Prokoshev (CC BY-SA 4.0)
- marbled-hatchetfish.jpg — Carnegiella strigata lateral view — SOK, Sven Kullander (CC BY-SA 4.0)
- marbled-hatchetfish-3.jpg — Gasteropelecidae Carnegiella strigata (5806481295) — Clinton & Charles Robertson from RAF Lakenheath, UK & San Marcos, TX, USA & UK (CC BY 2.0)
- dwarf-puffer.jpg — Carinotetraodon travancoricus Seitenansicht — 5snake5 (CC0)
- dwarf-puffer-2.jpg — Aquarium de la Porte Dorée - Poisson 127 — Tylwyth Eldar (CC BY-SA 4.0)
- dwarf-puffer-3.jpg — Carinotetraodon travancoricus shoaling — Christopher (CC BY 4.0)
- malaysian-trumpet-snail.jpg — Melanoides tuberculata 001 — H. Zell (CC BY-SA 3.0)
- blue-dream-shrimp.jpg — Neocaridina davidi 'Blue Jelly', ovigerous female with eyed eggs — Sleepycrab (CC BY 4.0)
- blue-dream-shrimp-2.jpg — Blue Shrimp — Atulbhats (CC BY-SA 4.0)
- tinfoil-barb.jpg — Barbonymus schwanenfeldii Lódź — Adrian Tync (CC BY 4.0)
- tinfoil-barb-2.jpg — Barbonymus schwanenfeldii - Cornwall (aquarium) — Emőke Dénes (CC BY-SA 4.0)
- tinfoil-barb-3.jpg — Barbonymus schwanenfeldii Bleeker — Published by Zoologische Mededelingen, at http://www.zoologischemededelingen.nl . Creative commons license published on main page. (CC BY 3.0)
- common-pleco.jpg — Common pleco(Hypostomus plecostomus) — Motu purkait (CC BY-SA 3.0)
- common-pleco-2.jpg — Pterygoplichthys gibbiceps Natural History Museum University of Pisa — Mattia Nocciola (CC BY-SA 4.0)
- common-pleco-3.jpg — Common pleco(Hypostomus plecostomus) (62381) — Motu purkait (CC BY-SA 3.0)
- peacock-gudgeon.jpg — Tateurndina ocellicauda, male after lunch — Cisamarc (CC BY-SA 3.0)
- peacock-gudgeon-2.jpg — "Tateurndina ocellicauda Natural History Museum University of Pisa .jpg" — Lorenzo Tarocchi (CC BY-SA 4.0)
- peacock-gudgeon-3.jpg — Tateurndina ocellicauda, male — Cisamarc (CC BY-SA 3.0)
- gc-clean.jpg — Palma Aquarium 1220241 — Steffen Mokosch (CC0)
- gc-20best.jpg — Devario malabaricus - adult coloration with schooling fish in background (aquarium) — Shifu Tanks (CC BY-SA 4.0)
- gc-betta.jpg — Building-mah-bubblenest-15338 — MyName (Flapper212 (talk)) (Public domain)
- gc-ammonia.jpg — Top view of a lab technitian putting a test tube with ink and water solution on a rack — Shixart1985 (CC BY 2.0)
- gc-swim.jpg — Goodbye the long goldfish tank farewell — AJ Gray (CC0)
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