Pacific Tuna fish

In news– Because of global conservation initiatives, Bluefin Pacific tuna stock will recover sooner than projected.

About Bluefin Pacific tuna-

The Pacific bluefin tuna is a predatory species of tuna found widely in the northern Pacific Ocean, but it is migratory and also recorded as a visitor to the south Pacific.
Pacific bluefin tuna have black or dark blue dorsal sides, with a greyish-green iridescence.
Their bellies are dotted with silver or grey spots or bands.
They have a series of small yellow fins, edged in black, running from the second dorsal fin to the tail.
A distinguishing characteristic of Pacific bluefin tuna is that the tips of the pectoral fins do not reach the front of the second dorsal fin.
They have relatively small eyes compared to other species of tuna.
They reach maturity at approximately 5 years of age and can live up to 26 years, although the average lifespan is about 15 years.
Adults are approximately 1.5 to 3meters long and weigh about 60 to 450 kilograms.
They mainly eat squids and fish, such as sardines and anchovies, saury, herring, pompanos, mackerel, hake, other tunas, and occasionally red crabs and krill.
The bluefin biomass, which is the parameter used to assess the stock of the fish, is set to cross the second rebuilding target later in 2022 much ahead of the predicted timeline. It has already met the first target which was set for 2024.
The biomass had shrunk to a sliver of its potential unfished biomass (another major assessment metric for the species) through the late 1990s and 2000s due to overfishing.