What do they all eat?

What do Tuna eat?

What do Tuna eatTuna have a high metabolic rate and digest their food quickly. Although their daily ration is estimated to be  to 15% of their weight, according to their age, the average stomach content is low, at around 0.3% of the body weight; that is, for a 1-m-long yellowfin tuna, which weighs about 17 kg, the stomach contents will be about 50 g, the equivalent of a hen’s egg. In general, prey items measure less than 15 cm and their average length varies between 4 and 7 cm according to certain areas. Fish are the main prey of yellowfin tuna, followed by squid. Crustaceans are negligible in the diet of tuna, whereas they present a large proportion sof the diet of tuna.



Tuna description:

Tuna are sea water fish from the family Scombridae, mostly in the genus Thunnus. Tuna are fast swimmers, and some species are capable of speeds of 70 kilometres per hour (43 mph) or more. Unlike most fish, which have white flesh, the muscle tissue of tuna ranges from pink to dark red. The red coloration derives from myoglobin, an oxygen-binding molecule, which tuna express in quantities far higher than most other fish. Some larger tuna species, such as bluefin tuna, display some warm-blooded adaptations, and can raise their body temperatures above water temperatures by means of muscular activity.

what do tunas eat

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