Collecting the Rio Mamoni Pleco's

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duanes

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Isla Taboga Panama via Milwaukee
The Rio Mamoni is a river in south eastern Panama, about a 1 1/2 hour drive from the landing on the Amador Peninsula where my ferry docks after the half hour cruise from Isla Tabooga where I live.
It is still the dry season, so the Mamoni is about a third its normal size at the moment.
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As the photos above and below show, its banks are exposed, and depth is severely lessened
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Most of the depth this day ranges from inches, to a little over knee deep, although along the eastern rock wall were some deep trenches.
Tetras were the dominating species in all areas, perhaps 100 tetras for any non-tetra species.
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I was able to net 1 cichlid, a juvie Andinoacara coerleopunctatus, in about knee deep water.
There was an injured adult cichlid spotted, although dying that gave us a glimmer of hope other species could be found.
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So I started casting into the deeper holes and trenches, and brought five 2" juvie Ancistrus chagresi.
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As usual I test the water to determine if its close to where my tank water parameters average, and as usual, nitrates were undetectable, and pH leveled out around 8.2
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After putting 5 Plecos in the main tank, there was one left in the bucket, so it went instead, into the sump, which sits in full sun, and grows more algae.
It will be interesting to see if this loner has an accelerated growth spurt compared to the 5 in the main tank.
The lone cichlid netted that day, was the little Andinoacara in the shot below, a little under 2"
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To tell you the truth, I'm not sure what it was/is.
Whether Darienheros calebrense, which occurs in that area
or Cribroheros altifrons (although altifrons is not supposed to occur this far east).
 
Now that you mentioned it, it looks a lot like D. calobrensis to me. The shape of the head, the red dots above the pectoral fins, the vertikal black bars. All matches with colobrensis. With a bit of imagination you can even see the typical black spot on its flank.

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