The ones on the picture (not circeled) are not blochi blochi, but C102 or another "leopardus"-looking fish.
The ones circeled (at least one of them , the other one turns the back towards us, so difficult to tell) is not C. lamberti, but some agassizii-looking fish.
This is one of Hans evers' pictures of C. lamberti collected in Peru:
http://www.bing.com/images/search?q=cor ... tedIndex=4
Note the dorsal-fin blotch that is missing in at least one of the circeled fish.