Larvae characterized by simple tubular gut, to 75% of body length in Derichthys serpentinus, to 90% in Nessorhamphus ingolfianus. Body depth less than 50% of body length. Myomeres 126-134 in Derichthys serpentinus, 149-159 in Nessorhamphus ingolfianus. Last blood vessel is at myomeres 59-63 in Derichthys serpentinus, at myomeres 75-80 in Nessorhamphus ingolfianus (Castle, 1984).
Table Derichthydae
22 geographic zones