collecting yesterday

[duanes]

It is the end of the dry season, and we passed a number of dried up stream beds, or just stagnant pools that appeared lifeless.
The rio Terable was the first with about half its normal water voluume and width, so we spent a few hours there.
The last time we collected Rio Terable, the river was raging, knife fish, tetras and catfish were abundant.

Yesterday tetras still dominated out nets, but there weren´t any knife fish, only 1 cichlid (Darienheros), a Sturomatichthys whip tail, 2 tiny Chaetostoma, and one Rhamdia catfish were caught and kept.
Tetras still cowded nets, but this time of year, they are plagued wiith Lernea parasites, so were all returned to the stream.

 

[Andyroo]

Fabulous! Thanks for sharing.
Is that a/the notorious Gold-Line knife I've been seeking all these ears?
Looks similar, though maybe chunkier & lighter

 

[duanes]

I belive there are on 2 or 3 knife species native to Panama.

Info Take From the net......
Panama is home to several species of native electric knifefish, primarily from the Gymnotiformes order, which inhabit freshwater rivers, streams, and swamps. Key types include bluntnose knifefishes (Hypopomidae) and glass knifefishes (Sternopygidae), such as Sternopygus macrurus, commonly found in southern Panama.
I´m not really up on knifefish taxonomy.
The Rio Terable is in south eastern Panama close to the Darien
When netted they were light in color, but in the tank, kind of charcoal black.

 

[Andyroo]

living right in that fast water?

 

[phreeflow]

living right in that fast water?

That’s really surprised me as well