cuttlefish, and smaller fish silhouetted against the gloom above them. Their distensible stomachs allow sabertooth fish to swallow prey larger than themselves; their recurved teeth likely function in a manner similar to a snake's, preventing a captured fish from backing out and helping to guide the fish down the sabertooth's pharynx. Sabertooth fish are solitary animals; it is not known whether they undergo diel vertical migrations. Their reproductive habits are poorly studied; they are assumed to be nonguarding, pelagic spawners. True synchronous hermaphroditism with external fertilization is known in Evermannella indica and Odontostomops normalops, and the former species appears to spawn throughout the year. Sabertooth fish larvae are planktonic and have long snouts and oblong eyes before metamorphosis. Both larvae and juveniles remain at shallower depths of 50–100 m, descending to deeper water with age. See also Saber-toothed salmon References Fishes: An introduction to ichthyology. Peter B. Moyle and Joseph J. Cech, Jr; p. 336. Printed in 2004. Prentice-Hall, Inc; Upper Saddle River, NJ. Evermannellidae