I thought it looked like a
, but I can't find matching patterned fish - which doesn't mean much. There's probably several (completely[1]) undescribed species of this genus.
is another Ancistrinae that has "hairy pectorals", so it's a possibility [and more likely considering that they are relatively frequently on sale].
[1] Completely undescribed => no L-number. L-numbers aren't exactly scientific descriptions, but it's at least giving some identity to an otherwise undescribed species.
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Mats