The bighead searsid (Holtbyrnia anomala) is a species of tubeshoulder fish.
It maximum length is . Its head is large, making up over a third of the fish's length. It has 25âÂÂ31 gillrakers; 5âÂÂ11 pyloric caecae. The snout is pointed, with premaxillary tusks pointing forward.
It is dark red in colour. Its photophores are rudimentary (except for the shoulder organ), hence its specific name anomala ("unusual").
The bighead searsid lives in the North Atlantic Ocean; it is a mesopelagic fish, living at depths of .