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Daniel Machado said:
I used to have a goby in my "mini-monster" tank... A wild-caught 2-inch goby from the Parnaíba River Basin, NE Brazil. Still not identified, but any help is useful:

Goby02.jpg

Goby04.jpg

Goby06.jpg

Goby07.jpg

Sorry for the crappy pics...

Best regards.

Daniel.
Click to expand...
Hiya Daniel,
I might have your sleeper tagged, if so the people at fishbase would love a picture and capture report as this slightly extends it's range and they have NO pictures.
Pretty cool, eh?

There are 2 possibilities, the first although fairly common down to SE Brazil doesn't seem right, that would be a juvenile Dormitator maculatus. The pictures give me the impression that this is a very small fish and even juvie D. maculaus get large fast. They are also hevier bodied and the three dark lines radiating backwards from it's eyes are usually very pronounced even when young.

The one I hope it is is a much smaller fish getting to only 9-10 cm. I have seen only a written description from Murdy and Hoese.
The Parnaiba basin is in the far north eastern portion of Brasil and empties northward into Suriname, does it not? If so and your fish is 10 cm. or smaller you might have a Dormitator lophocephalus which is exciting as the fish wasn't even described until 1951 and has only been recorded in Suriname so far. You might just get yourself a footnote and a photo credit from fishbase!
There might be some info online at http://atlas.dr.pez.org but I have trouble with that site since I am totally illiterate in Portuguese or for that matter Spanish.
Please post what you find out.
 
Guppy,

The Atlas section of Dr. Pez is "closed for maintenance", and the Fishbase page "cannot be found"... But the Parnaíba River doesn't get close to Suriname. The Parnaíba River gets to the Sea, in the state of Piauí. The red circle shows where it is, in the image below:

mapa.jpg


Here's a pic of the Parnaíba River Delta:
riodelta.jpg


And there are more pics of the Parnaíba River in THIS LINK. This fish was (sorry, lost it... :( ) 40-45 mm long. I kept it for two months, it was eating VERY well, and it grew from 40 to 45 mm in this time, suggesting it's not D. maculatus, as you thought. I'm pretty sure it's Dormitator lophocephalus or anything undescribed close to it. Its body structure suggests it's not a fry, being compatible with a half-grown 100 mm fish. Hope we are right... :grinyes:
BTW, does the description of D. lophocephalus have any drawing? Do you have the original paper, or the reference? Anyways, thank you very much for your help. :thumbsup:

Best regards.

Daniel.
 
I can't seem to find the original site I got the info from and I think it takes a university request to get into the other.
The only source I know of for the original publications is the California Academy of Science.
Catalogue of Fishes, the W.N.Eschmeyer collection.
You will want,

Hoedeman, J.J. 1951
Een Nieuwe Kleine Gobiide Vis Met Samengegroide Buiesimmen Bij de Man (Dormitator lophocephalus * sp. Nov.)
Beaufortia 1-6
C.A.S. Ref. No.: 12894

and

Hoedeman, J.J. 1952
Importen Uit Surinam, Berichten Van Het Visdetermideistation Van de N.B.A.T. Het. Aquar. 197
C.A.S. Ref. No.: 22023

The only other reference work I found was the one I read the excerpt from and that is,

Murdy, E.O. and D.F.Hoese 2002
Eleotridae, Sleepers..p.1778-1780 in: K.E.Carpenter (ed)
FAO. Species Identification guide for Fishery Purposes.
The Living Marine Resources of the Western Central Atlantic. Vol. 3 Bony Fishes. part 2

I hope this helps.
 
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