From Wikipedia, the free encyclopedia
Jump to: navigation, search
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Subfamily: Stevardiinae
Genus: Mimagoniates
Regan, 1907

Coelurichthys Miranda-Ribeiro, 1908

Mimagoniates is a genus of characid fish from rivers and streams in southern and eastern Brazil, northeastern Argentina and Paraguay.[1][2] Commonly known as croaking tetra or chirping tetra because they can produce sounds, some of these fish were formerly included in Glandulocauda. They have a supplementary breathing organ located above the gills which makes a faint chirping sound when these fish come to the surface to gulp air. It also plays a role in courtship as the male chases and hovers near the female while taking gulps of air and expelling it to make a rhythmic noise.[3] Croaking behavior may have evolved from a behavior called "surface nipping", which occurs when the fish is searching for food. This gulping of air has no useful respiratory function.[4]


There are currently 7 recognized species in this genus:[2]


  1. ^ Froese, Rainer, and Daniel Pauly, eds. (2016). Species of Mimagoniates in FishBase. January 2016 version.
  2. ^ a b Thomaz, A.T., Arcila, D., Ortí, G. & Malabarba, L.R. (2015): Molecular phylogeny of the subfamily Stevardiinae Gill, 1858 (Characiformes: Characidae): classification and the evolution of reproductive traits. BMC Evolutionary Biology, (2015) 15: 146.
  3. ^ Axelrod, Herbert Richard (1996): Exotic Tropical Fishes. T.F.H. Publications. ISBN 0-87666-543-1
  4. ^ Nelson, Keith (1964): The Evolution of a Pattern of Sound Production Associated with Courtship in the Characid Fish, Glandulocauda inequalis. Evolution 18(4): 526–540.doi:10.2307/2406207