Collecting Panama-Knife fish

  • We are currently upgrading MFK. thanks! -neo

duanes

MFK Moderators
Staff member
Moderator
MFK Member
Jun 7, 2007
22,550
29,504
2,910
Isla Taboga Panama via Milwaukee
After spending the night in a hotel in Panama City, Dani Atencio picked me up at the Amaze Inn the final day of Carnevale, in Casco Viejo, and we got an 8 AM start.

IMG_1458.jpeg
We would normally be constrained by the back-n-forth ferry schedule, and not getting on the road until almost 10 AM, but today we planned to hit at least 3 (maybe even 4) maximizing chances of finding and catching more Geophagus.Having caught the 1st, and only Geo so far, in the Rio Plataneros de Chepo a month ago, that was the main target, and was our starting collection point, so we could work our way back, hitting all uncontaminated rivers, those more remote rivers further east, in an effort to collect more Geos.
The first river we hit though, was the Rio Terable, and it was quite swollen and fast moving.
IMG_1459.jpeg

The only fish caught were Tetras (which were all thrown back (usually being riddled with Lernea), a couple catfish (not quite sure what species yet though) and lots of knife fish.


IMG_1460.jpeg
Once they started being netted, almost every cast brought one of the knifes up, but no Geos, so we moved on keeping just 3 of the Gymnotiformes.


IMG_1464.jpeg

Next was the small, (maybe only 10 ft wide stream) the Plataneros, but construction had recently altered it to half width, it was turbid with particulate, and no geos, so again moved on.
We next hit the Rio Uni, it had lots of Tetras (also returned to the river), and one (so far unidentified) goby was kept.

IMG_1461.jpeg
IMG_1465.jpegIMG_1468.jpeg
The massive Mamoni was came up last up, with its fast flowing tributary called the Rio Margaritas, where nothing was caught.
So we called it a day
 
  • Like
Reactions: Milingu and M075
The catfish is a Trichomycterus spp., of the genus I think only striatus is found as far up north as Panama. Quite a variable sp., though I am used to seeing individuals with a thick lateral stripe. One of the interesting stream-dwelling pencil-catfishes.
The knife-fish is Sternopygus spp. Off the top of my head, I know macrurus can be found throughout the southern end of Panama, but I am not entirely sure if that is the fish you caught.
 
Thanks for those IDs
I´m pretty well versed in new world cichlids, but pretty ignorant of other fish families.
It interesting to me that, when 1st netted in the Latte colored water of the river, the knifefish matched their surrounding very color well,
but once in the temporary holding cooler, and in the tank, darkening was almost immediate.
 
I love that you stayed at the "Amaze Inn"

Thanks for posting your expedition, truly awesome!
 
MonsterFishKeepers.com