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Curated groups of species that share a requirement or a role in the tank.

Beginner-friendlyHardy species that tolerate a newcomer’s early mistakes.11 speciesBottom dwellersCatfish and loaches that work the substrate.18 speciesCommunity tankPeaceful fish that mix well in a general aquarium.60 speciesCool water / unheatedSpecies that suit cooler or unheated tanks.11 speciesHard waterSpecies that thrive in mineral-rich tap water.8 speciesNano tankSmall fish and inverts for tanks under about 40 litres.21 speciesPlanted tanksSpecies that suit a planted, well-lit setup.23 speciesSoft waterSpecies that need softer, often more acidic water.24 species
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