Penguin tetra (Thayeria boehlkei)
Penguin Tetras are from rivers in South America, and are pale to golden in colour, with a black vertical stripe extending down the bottom half of their tails, making them look similar to a penguin (well – as similar as a fish can look to a penguin). They can live happily with other soft water fish. They are a shoaling fish that prefer to live in groups of six or more fish of the same species. Live plants, rocks and driftwood help replicate their natural habitat and provide hiding spaces.
Penguin Tetras will sometimes breed in an aquarium setting, so you may need a hospital tank to look after fry. When ready to breed, the females will become slightly rounder looking, which helps to distinguish them from the males. Eggs will begin to hatch 12 to 15 hours after being laid, but fry will be eaten by the parents (or other tank-mates) unless they are removed and housed elsewhere until big enough to survive.
Penguin Tetra will eat tropical flake food, and also brine shrimp, daphnia, freeze dried bloodworms and tubifex, and micro pellet food.
Size (fully grown): 7.5cm (3″)
Water temperature: 22 – 27C
Water pH: 5.8 – 8.5 (optimum 6 – 7.5)