LDA24 [That's the first one I found flipping through the pages in my Aqualog] is a Hypostomus (possibly in the Cochliodon group, but stilla Hypsotomus). But the body-shape of your fish is wrong for this one - like you say.
Agreed.
Hypostomus LDA24 is not thought to be a member of the
Hypostomus cochliodon species group.
L266 is also a Hypostomus, this one definitely in the Cochliodon group. Aqualog says "=L231" on the comment on this fish - I don't agree. L231 has a different body-shape (similar to LDA24).
Aqualog is in my opinion wrong. The fish pictured in Aqualog is a member of the
H. cochliodon species group, but is a very different fish to the "real"
Hypostomus L266 pictured in DATZ and Wels Atlas II. The real L266 is not considered to a member of the
H. cochliodon species group by Evers and Seidel.
I would say your fish is a member of the
H. cochliodon species group, and is likely to be either
(L050), or
. I would favour the latter.
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