What’s the last guy with the yellow eyes?Thought it would be cool to make a new thread on wolves! Let's make it a little more interesting and also write where the wolf is from if you happen to know.
1.) Hoplias lacerdae (Manua Brazil)
2.) Hoplias aimara (Venezuela?)
3.) Hoplias lacerdae (Tapajos river)
4.) Hoplias sp. (Misiones)
5.) Hoplias curupira ("choco")
6.) Hoplias intermedius (presumably)
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Wait till it gets bigger and try some dark substrate. The larger specimens had the color contrast.