My Brachyplatystoma filamentosum (Disscussion)

GiantFishKeeper101

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The snout is quite frequently damaged in captivity. I don't think it can be used reliably as a trait. I am a bit lost in the intricacies of your analysis of (all?) the piraibas coming, staying, and going in your country :) Teasing. Still, with so much info and back and forth conclusions, I must admit I am lost at the moment, short of dedicating a couple of hours sorting through your journal with no guaranteed success.

***Agree, mine is in the 120g tank, kinda small for him now but will transfer after he reached 12" to reduce future snout damage. But 1 of my friend have the same piraiba from the same batch. He kept it in a large tank but it also loses the snout curvature. Pic:

received_215558516059299.jpeg

Its okay to be lost, I'm currently lost too. There's always changes & I have to update every time, back & forth my previous claim. I saw what other people fail to see but so hard explaining it by words. The info I've put through are still not definitive tho.

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That's the most important thing in my mind. Knowing exactly where the fish was collected, at least the country if not the river. Not a guess. Not a likely. Not a maybe. Not an "I think" or "I believe". But for sure. This must be the basis and the cornerstone of all scientific and pseudoscientific analysis. IMHO. Otherwise, the conclusions will forever be haunted as questionable. No if's or but's about it. If the origin is unknown with certainty, there could be allowed to be a third group of specimen, but only as a supplemental material, not the knowledge base.

In your analyses, these specimen are mixed. Hence, I am lost what to consider reliable and what not and what is in between.

***Will get the answer ASAP. As I stated, my info still not definitive. Mostly theory but oh how I wish I could go to SA to study the fish myself LOL. The inaccuracies killing me.

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As I described IME, the two Peru piraiba from Mark Chen of Discus Origins, Ocala, Florida, USA, have always been different color in my hands except the first day. I think it simply may reflect the dominance factor.

***Yes, it may reflect on dominance factor but when the "Unknown" aka White Shovel Head (how bout I just all it that) in the dark base pond, it lives by itself, no other fish in there except for a few feeders. He remains light colored, contradict of what happened to the Peru. Also, the Unknown with snout defects in the youtube video lives in a dark tank, yet still remains light colored. FYI, the video are the same guy I bought the died-full spotted Suriname or Leopard (lets call it that, way shorter). See post #53, the Leopard, still in his care, have dark base colored.

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The only difference I see right away is the base color. Everything else seems the same.

***Maybe from the video doesn't show significant differences, but when see it upfront, you can tell it right away. As stated, I saw what people fail to see. I saw different head, different body depth, etc.

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That to me doesn't look natural but I'd think it had been damaged some time ago and healed up. As for the non-damaged mouth shape, I'd think the dorsal head shots would be required. Plus knowing the origin for sure.

***The tip of Rpul's & fishtankphil's Suriname also have slight bent like this. That's why I concluded that Suriname most likely be like this. Because they are the 2 people (that I know of) that have kept juvenile Suriname.

The Leopard are from Suriname, the shop owner told me (before it was purchase from the guy that sold me the Leopard). There's also difference in price range. As I been told before, any Suriname shipment kinda expensive. So the 12" Leopard (12" at that time) are priced at 666usd (converted). The upcoming 7" Leopard are priced at 450usd. Way more expensive than 100-150usd price range of common Peru.

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Sorry to hear. Stress could be considered. The size disparity was large and the smaller piraiba was afraid (from the video) of the bigger one. I doubt though the stress killed it. Just a complicating factor.

***Indeed it is a doubt, the Leopard doesn't have trouble eating. The video is on the 3rd day, he eats well on the 4th, died on 6th. A few hours before death, he swims behind the big guy as usual, I didn't see any unusual behavior. My best guess was probably temperature swing. Previous owner kept in house, my tank are outside but I don't remember if that day was hot or not.

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See above. Do you now the origin for 100% sure?

***Yes, the shop owner told me, as stated above.

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Understood. I am asking for my own understanding. Not trying to poke holes in your endeavour for me or others to see. You can see I usually have no problem acknowledging being confused, which in part or sometimes in entirety is my fault.

***Understandable, but there's no simple ways to put this. It is best to experience it upfront

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Tonights photos: The "Unknown"
IMG_20190124_023846.jpg IMG_20190124_023832.jpg
 
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moe214

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Imo, I was able to see some of the things you pointed out, but some of them I wouldn't deem as a definitive variant trait because to commonly we know of other things that affect certain traits you mentioned. I held my tongue having never kept one myself though and respecting how tbtb wanted the thread organized.
 

thebiggerthebetter

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Imo, I was able to see some of the things you pointed out, but some of them I wouldn't deem as a definitive variant trait because to commonly we know of other things that affect certain traits you mentioned. I held my tongue having never kept one myself though and respecting how tbtb wanted the thread organized.
You held in vain. This is not my thread and not the thread you are referring to right now. This is MarlboroMat's thread. Mine is getting dusty but will be dragged out to see the light of day again.
 
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GiantFishKeeper101

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The official thread do kinda dusty, unpopular. Most piraiba keepers doesn't even care about the variants existed. They're just "I have this & that is that". Sad really
 
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GiantFishKeeper101

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IMG_20190126_002952.jpg

Arrived yesterday, already eating. That's good news. thebiggerthebetter thebiggerthebetter the Suriname trait as I mention before, slight curve end of snout. IME Suriname are much calmer than their other cousins, the 15" snout may not be damaged at all, it is one of the traits same as Suriname in post #23 page 3
 
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thebiggerthebetter

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You may be seeing more in person than I (we?) in photos. The piraiba in the photo on page 3, post #23 (behind the vaillantii) has a snout that's as straight as an arrow to my eye.
 

moe214

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You may be seeing more in person than I (we?) in photos. The piraiba in the photo on page 3, post #23 (behind the vaillantii) has a snout that's as straight as an arrow to my eye.
+1 I don’t think the snout is gonna be reliable. Unless different sub species or species the differences in variants usually come down to colors, patterns, and size. I feel like trying to describe different locales like different species will never work and to me that’s what is trying to be done.
 

GiantFishKeeper101

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Oh, it is reliable. Juvenile Suriname all have slight curve on their snout tip.

See it closely, as the tip have slight curve
IMG_20190126_160318.jpg


Mine
IMG_20190126_160408.jpg


Fishtankphil
IMG_20190126_162946.jpg


Rpul
IMG_20190126_162813.jpg


As they grow, the curve expands & gets a bit prominent like an oversize lip. Creating a curve on mid upper jaw.
IMG_20190126_170517.jpg


Full adults loses the 'lip' but curve on mid upper jaw are more prominent.
IMG_20190126_170045.jpg


Compare to Brazil
IMG_20190126_165146.jpg
 

moe214

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I feel the first picture and rpuls look the same as the brazil pictured. And then the second and third picture looks the same but different from the other two, to me they may have bent their snout.

Can’t really compare the two larger fish pictured as one from Brazil is clearly larger. I see a flatter head on the smaller one but no curve but it is also skinnier all around and looks to be shorter in length.

A few specimens doesn’t make it definitive to me just yet. I’d have to see it on a small specimen and Be reassured it didn’t damage it and I can’t do that without keeping one so I will remain skeptical. I won’t be able to debunk your theory but challenge it and make it clearer for others maybe. I see what you are saying to an extent I just don’t think it’s a locale trait.
 
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GiantFishKeeper101

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This is the best I can do. If wanna truly see it, need to experience them personally & do a lot of self revision on it, google, insta, fb, ask around, get to know supplier, etc. To me, there are differences & can be easily distinguished especially the large one but each to their own preferences.

But there're also other differences, spots. Suriname have small uneven spots, unlike other variants except Guyana. Those surely we can agree on.
 
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