sentences:  One study in Indian waters found that 55% of this shark's diet was composed of bony fishes (mainly lanternfishes but also bristlemouths and small eels), 28% of crustaceans (mainly shrimp but also stomatopods and crab larvae), 14% of squid, and the remainder of other items including a bivalve.Reproduction is aplacental viviparous, with the developing young being sustained by a yolk sac until they are ready to be born.Female pygmy ribbontail catsharks are capable of becoming pregnant at long, though only females over long have been found with fully developed fetuses, suggesting that they grow substantially during the gestation period.