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 are observed. The half black tail and the shaky movements of this tetra earns the name.
- Scientific Name: Thayeria boehlkei
- Origin: Amazon Basin
- Lifespan: 6 years
- Max Size: 2 inches
- Food: flake, live, frozen
- Shipping Size: Approx. 1 inch