Just some added info
According to Oliver Lucanus of “Below water”
Lophiosilurus alexandri, The Pacman catfish is collected only in the remote Rio Sao Francisco.
When I asked him abt the biotope of the location, this is what I was told
“It is a fast moving river, the pacs live burried in the sand.
The Sao F is off limits for fishing until spring...”
abt sexing…
according to Oliver,
“Hard to sex, like all pimelodids, check from underneath.”
So what abt sexing a pimelodids ?
According to HH of petfrend “Males have a longer, slenderer genital papilla”
Genital Papilla - a tube extending from the genital pore, behind the anus
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