The Characiformes are an order o ray-finned fish, comprisin the characins an thair allies. Grooped in 18 recognized faimilies, thare are a few thoosand different species, includin the well-kent piranha an tetras.[1]
The Characiformes are an order o ray-finned fish, comprisin the characins an thair allies. Grooped in 18 recognized faimilies, thare are a few thoosand different species, includin the well-kent piranha an tetras.