Tucanfish

The tucan fish has a pale-silver body, with bright-yellow ventral fins (hence its other common name); the rest of its fins are some mixture of yellow and red, usually with a reddish tail fin. In terms of size, it reaches 21.4 cm SL. This makes it one of the larger members of the genus Chalceus, outsized only by the pinktail chalceus.

The tucan fish can be found in the Amazon and Solimões rivers, and its habitat extends into Peru by way of the Ucayali river.

Like others in the genus Chalceus, the tucan fish is primarily a carnivore, targeting aquatic invertebrates (such as insects and crustaceans). It is known to be somewhat skittish, and may jump out of the water on occasion.

== References ==

The name "tucan fish" directly translates to "toucan fish", as tucán means "toucan" in Spanish. All members of the family Chalceidae are sometimes referred to as tucanfishes, but C. erythrurus is the species to which it is most often applied. The genus name Chalceus is Greek, and means "brass" or "copper". The specific name erythrurus also originates in Greek, with eruthros meaning "red" and ouros meaning "tail", in reference to its caudal fin usually being reddish.