Penguin Tetra
One cannot tell from a picture of a single fish, but the penguin is the first thing that comes to mind when a school of these fish is observed. The half-black tail and the shaky movements of this tetra earn the name.
Quick Facts
| Scientific Name | Thayeria boehlkei |
|---|---|
| Origin | Amazon basin (Peru, Brazil) |
| Care Level | Easy |
| Temperament | Peaceful |
| Adult Size | Up to 2½” |
| Lifespan | 5–8 years |
| Diet | Omnivore |
| Water Temperature | 72–80°F |
FAQ
What is the ideal water temperature for Penguin Tetras?
The ideal water temperature for Penguin Tetras is between 72°F and 80°F.
Are Penguin Tetras suitable for community tanks?
Yes, Penguin Tetras are peaceful and make good additions to community tanks with other non-aggressive fish.
How long do Penguin Tetras typically live?
Penguin Tetras can live for 5 to 8 years with proper care.

Frank Martin –
I bought a small school of Penguin Tetras for my 10-gallon tank. They are very active and their unique black-tailed appearance makes the tank look lively. They’re easy to care for and don’t stress other fish. I’ve had them for six months and they’re still healthy and vibrant.
Melanie Carr –
The fish arrived quickly and looked healthy. They swim in groups and their movements are quite distinctive. I like how they don’t compete with other species. Just make sure the water temperature stays within the recommended range.
Ava Vance –
Great addition to my freshwater setup. They’re peaceful, colorful, and active. I feed them a mix of flakes and live foods, and they seem to enjoy it. The school behavior is very appealing and adds a dynamic look to the tank.