Pelagic; marine. Found on the body and inside gill chamber of billfishes and swordfishes, rarely on other species of fishes.
- Bigelow, H.B. and W.C. Schroeder, 1953; Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983; Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989.
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