Brachyplatystoma ID

[Sunnyboy]

Hi

Based in Thailand here. I know threads like these appear a lot, but regardless I'd really appreciate it if someone could help ID this Brachyplatystoma species. Found this guy in an aquarium in Bangkok. I think it's a capapretum but would also like to hear your opinions.

Thanks!



View attachment 1249900

 

[thebiggerthebetter]

Good eye.

Two years ago I couldn't tell. Now I agree without doubt. This is a capa or at least what we know as capa. Not filamentosum.

 

[thebiggerthebetter]

What are you trying to do? You posted three quotes without anything new.

 

[Sunnyboy]

Thanks. There's still a lot of misconception here, as they're not kept here as much as let's say arapaima or RTCs and thus aren't Well known.

What are you trying to do? You posted three quotes without anything new.

Whoops, sorry! I was trying to reply to your feedback. I'm completely new to this site and will be prone to making mistakes like these (also posting from an Ipad which makes it more difficult.)

 

[headbanger_jib]

Good eye.

Two years ago I couldn't tell. Now I agree without doubt. This is a capa or at least what we know as capa. Not filamentosum.

Any pointers as to how to accurately identify

 

[Sunnyboy]

Any pointers as to how to accurately identify

My guess would be the size and the location of the spots. Spots in B. filamentosum generally smaller than eyes and located predominantly in the posterior regions of the fish. Also B. filamentosum possesses extremely long maxillary barbels (but then again they can break off.) Head shape is also slightly different between the two species, although I'm not sure how to quite describe it. Tail shape is also indicative, with B. filamentosum having very deeply forked caudal fins, with the top lobe being longer than the bottom (in contrast to B. capapretum having less forked caudal fins with proportional lobes.)

This is the criteria I use when identifying juveniles. It may not be accurate so it'll be great if we can get more information from the experienced guys.

 

[thebiggerthebetter]

Well put. I doubt I could say it better.

Apart from the highly informative threads which I will link below, my knowledge is due to Wesley Wong of Rare Fish, Raymond Chan of Amazing Fish, and Mark Chen of Discus Origins and perhaps some other vendors who lately have been bringing true piraibas to the USA.

Having seen these (just like vincentwugwg I got lucky to own now three - one from Wes imported from Suriname and two from Mark from Peru) and having seen false piraibas that have been available more or less steadily through the years, it is easy to see the difference.

http://www.monsterfishkeepers.com/forums/threads/piraiba-pictures.520869/

https://www.monsterfishkeepers.com/...achyplatystoma-capapretum-photos-talk.534713/

 

[Sunnyboy]

Hey guys its been a while!

Look what I've got here now!

 

[Sunnyboy]

Think I've got the fila this time around

 

[Sunnyboy]

In terms of behaviour this new guy is much less skittish than the previous capa.