Category: Fish
This native of the Congo River Basin of Africa is commonly kept in aquaria and requires soft, peat-filtered water and a darker substrate. They are happiest at lower light levels and their beautiful rainbow colors are most obvious in subdued lighting. They are a peaceful, schooling fish that are easily intimidated by aggressive tank mates.
https://en.wikipedia.org/wiki/Congo_tetra
http://www.petsource.org/aquatic-by-species/aquatic-fresh-water/3712-congo-tetra.html
Undersea Conversations…
While it isn’t obvious, fish have ears, and are able to communicate to one another through sounds. They don’t have vocal chords, but instead vibrate their swim bladders, producing popping, grunting, moaning, barking, or chirping noises. While some species of fish, like the goldfish, are silent listeners, there are over 1000 species that are known to vocalize, and some, like the gurnard who are veritable chatterboxes. While we can’t have a conversation with them - at least not yet - it is theorized that they do it to attract mates, frighten away predators or competitors, to synchronize mating, call for help and warn others, or to orient themselves.
Learn more >>
Discover Animals is a web-based educational resource offered by the NAIA
