arguing every detail of how to pronounce latin names is asinine in the end; the scientific community even pronounces various scientific names differently...in most cases they have moved well past arguing about that and on to (at least theoretically) more worthwhile arguments and issues.
and for the record, most ichthyologists and fish ecologists i know pronounce that second "p", and when it shows up similarly in invertebrates, most entomologists and the like also pronounce it.
so, one can sound different and say it how they think is correct in the case of Latin names, but i would be slower to criticize telling other people they are wrong. won't help one's case or make many friends
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--solomon