Ancistrus ranunculus

Ancistrus ranunculus
Medusa Pleco (L034)
A truly bizarre looking species, the massive, wide head and flattened profile of Ancistrus ranunculus are truly distinctive. Unfortunately this fish is not the easiest fish to keep alive in the aquarium, as it requires somewhat specialised conditions. 
Although all black, this is an easily identified species of Ancistrus due to its extreme head-width.