BettaBetta splendens
- 24-26 C
- pH 6.5-7.5
- 40 L+; 45 x 30 cm base
Neon tetraParacheirodon innesi
- 21-25 C
- pH 6.0-7.5
- 60 L+; 60 x 30 cm base
OtocinclusOtocinclus vittatus
- 22–27°C
- pH 6–7.5
- 50 L+
Cherry shrimpNeocaridina davidi
- 18–26°C
- pH 6.5–8
- 20 L+
Nerite snailNeritina natalensis
- 22–28°C
- pH 7–8.4
- 20 L+
Ember tetraHyphessobrycon amandae
- 24–28°C
- pH 6–7
- 40 L+
Chili rasboraBoraras brigittae
- 24–28°C
- pH 5.5–7
- 30 L+
Honey gouramiTrichogaster chuna
- 22–28°C
- pH 6–7.5
- 50 L+
Endler's livebearerPoecilia wingei
- 22–28°C
- pH 6.8–8
- 40 L+
Amano shrimpCaridina multidentata
- 15-28 C published range
- pH 6.0-8.0
- 40 L or more for a small group; editorial starting plan
Sparkling gouramiTrichopsis pumila
- 24–28°C
- pH 6–7.5
- 30 L+
Celestial pearl danioDanio margaritatus
- 20–24°C
- pH 6.5–7.5
- 30 L+
Crystal red shrimpCaridina cantonensis
- 20–24°C
- pH 5.8–6.8
- 20 L+
Mystery snailPomacea diffusa
- 20–28°C
- pH 7–8.4
- 40 L+
Threadfin rainbowfishIriatherina werneri
- 24–28°C
- pH 6–7.5
- 50 L+
Ramshorn snailPlanorbella duryi
- 18–28°C
- pH 6.5–8
- 20 L+
Pygmy coryCorydoras pygmaeus
- 22–27°C
- pH 6–7.5
- 40 L+
Dwarf pufferCarinotetraodon travancoricus
- 24–28°C
- pH 6.5–7.5
- 40 L+
Malaysian trumpet snailMelanoides tuberculata
- 22–28°C
- pH 6.5–8.2
- 20 L+
Blue dream shrimpNeocaridina davidi
- 18–26°C
- pH 6.5–8
- 20 L+
Peacock gudgeonTateurndina ocellicauda
- 22–26°C
- pH 6.5–7.5
- 50 L+
Choosing
How to pick from this list
- Start with your water. Test pH and hardness, then keep species that already suit it rather than adjusting the water.
- Plan for adult size. A fish that is small in the shop may grow large. Check the minimum tank on each profile.
- Buy the group, not the single. Most of these species are shoalers and settle best in the numbers shown.
FAQ
Common questions
How many of these can I keep together?
It depends on tank size, filtration and the species’ group size. Use the tank volume and stocking calculators, and add fish gradually.
Do these species need a heater?
Most listed here are tropical and need a heater. Cool-water species are marked, and suit unheated tanks in a warm room.
Can I mix species from this collection?
Often yes, if they share water and temperature needs and neither is aggressive. Check each profile’s tank-mate notes first.