COLOMBIA: Pterophyllum altum from Rio Atabapo

By Heiko Bleher

It was in late 1969 that I was finally able to reach the blackwater river called the Atabapo in the remote southern part of Venezuela’s Amazon state. While I was working on Gulf Fish Farms in Florida and studying at the University, Ross Socolof had told me about an angelfish which was known only from the upper Orinoco basin, it was the largest of all angelfishes and I ought to collect it…

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