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Identifying Plecos
Posted: 14 May 2003, 02:54
by retro_gk
Given juvenile fish of 2"-4" in length, how can I differentiate between Hypostomus spp., Glyptoperichthys spp. and Liposarcus spp.?
rahul
Posted: 14 May 2003, 04:31
by Shane
Rahul,
Count the dorsal fin rays. Hypostomus and Cochliodon have I, 7 (meaning one hard ray followed by seven soft rays) while Glyptopterichthys and Lipsarcus have I, 8 or more (actually usually more than 12).
-Shane
Posted: 22 May 2003, 03:26
by retro_gk
Hi Shane,
Thanks for the reply, determined that all fish in LFS are Liposarcus .Is there any way to sex them at this size? Are there any external differences. I also have access to a couple of 12"+ specimens.
rahul
Posted: 22 May 2003, 03:41
by Silurus
It won't be easy sexing the smaller fishes. For the larger fishes, you'd have to look at the genital papilla. It's larger and more prominent in the males.