Penguin Fish (Thayeria boehlkei)

The Penguin Fish or Thayeria boehlkei is just one of the many different species of Tetra fish.  Tetras are from the Characidae family, and can be distinguished from other fish by the presence of a small adipose fin between the dorsal and caudal fins.  They all originate in the tropical freshwaters of the Africa, Central America and South America.

Penguin Fish go by a few different names including Blackline Penguinfish, Blackline Thayeria, Hockey-Stick Tetra, and Penguin Tetra.  These fish are small, only growing to about 3" in length.  They are the perfect starter fish, able to survive in the following water conditions, 64-82° F, KH 4-8 and pH 5.8-8.5.  Penguin Fish work well in a group of six or more, and are great for a community fish tank.  They will accept a variety of foods, and are very eager feeders making them one of the easiest freshwater aquarium fish to care for.  Providing them with live plants and plenty of hiding spaces will keep them happy, and stress free.  You can see how the Penguin Fish would look swimming in your tank in the video below. 
 

It is possible to breed Penguin Fish in an aquarium setting.  Slightly acidic water is said to help encourage the breeding process.  The female's belly will grow larger and she will eventually lay her eggs.  It only takes about 15 hours for the eggs to hatch, and then the baby fry should be separated from their parents or risk being eaten.

If you have any additional information about the Penguin Fish please leave us a comment below.