Onychodus is really a genus of prehistoric lobe-finned fish from your Devonian period of time, somewhere around four hundred million decades ago. Noted for its distinctive features, Onychodus was an early example of sarcopterygian fish, which incorporates ancestors of recent lungfish and tetrapods. Yet another smaller fish liked in aquariums https://indexedbookmarks.com/story18531375/exotic-fish-for-dummies