
Royal tetra
Inpaichthys kerri
Acestrorhamphidae, Thayeriinae

Inpaichthys kerri
Acestrorhamphidae, Thayeriinae
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Oliver KnottJun 6, 2026
Oliver KnottJun 4, 2023
Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm.
Why "one cm of fish per liter" falls short, and what adult size, schools, territory and swimming zones mean for how many fish a tank can hold.
Soft, acidic water, subdued light, sand, roots and fallen leaves: how to set up a biotope aquarium from the Amazon and the rivers around it.
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.
Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.