Geophagus Altifron

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baseballman1321

baseballman1321

Polypterus
MFK Member
Jan 29, 2010
1,386
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usa
heres a quick video of my male altifron he has really put on some size since I got him. heres when I first got him [YT]yoDqkOyix60[/YT] heres today a little over a year later. [YT]Y1I-IFGcSfc[/YT] hes not a big fan of the camera every time I take it out he hangs out in the back
 
David R said:
Nice fish and a great looking set up. Are you sure about the id though, I thought altifrons didn't have a large defined spot on the side?
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Thanks. Im sure theyre are altifrons but im not sure where theyre are from and that obviously varies how they look. I have been told maybe rio negro but i dont know if thats what they are.


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Nice looking tank! Red heads look good too. I like your lighting, it looks like it produces alot of shadows - what are you using to light the tank?
 
I wish Weidners Eartheaters book wasn't so damn expensive, it would be great to have for identifying species. But from what I've found online the dark spot on the body is reduced to 1-2 scales in G. altifrons, or completely absent in adults.

From here; http://www.seriouslyfish.com/species/geophagus-altifrons/
Despite its designation as type species this is among the most frequently-misidentified members of the genus. This is in part because its natural distribution was earlier considered even more extensive than the still-substantial range recognised today, with populations from the Río Orinoco, Guianas and rio Tocantins now recognised as species in their own right.

Further confusion has been caused by undescribed Geophagus species from various parts of the Amazon basin being traded as geographic forms of G. altifrons or G. sp. aff. altifrons despite possessing prominent midlateral markings or vertical body stripes, whereas in G. altifrons sensu stricto these features are greatly reduced and absent, respectively.

It’s a member of the putative G. surinamensis ‘group’ of closely-related species within the genus and can be identified by a combination of characters including: no dark preopercular marking; no vertical bars on the flanks even when stressed or preserved; dark midlateral marking reduced to 1-2 scales width or even absent in adults.
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So going by the large dark spot on yours they are another species, not altifrons. Which isn't a bad thing, I'd gladly trade them for my altifrons as that is all we get here!!
 
David R said:
I wish Weidners Eartheaters book wasn't so damn expensive, it would be great to have for identifying species. But from what I've found online the dark spot on the body is reduced to 1-2 scales in G. altifrons, or completely absent in adults.

From here; http://www.seriouslyfish.com/species/geophagus-altifrons/


So going by the large dark spot on yours they are another species, not altifrons. Which isn't a bad thing, I'd gladly trade them for my altifrons as that is all we get here!!
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I hear you on the book! its too bad its expensive. im glad you brought up this discussion because with some google searches I cant seem to find one species that look just like mine so now im curious to see what they are. hopefully someone know.
 
Great looking fish! That Altifron certainly has gotten a lot bigger than the Red Heads, which also look fantastic by the way.

About that Weidner book. I wish someone would just scan the damn thing so we could all enjoy it! lol
 
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