Canned fish finds the hidden one packs into the same space until there is only one left out, who becomes the next one to hide. Tuna is canned in edible vegetable oils, in brine, in water, or in various sauces. In the US, it is sometimes called "tuna fish". In the United States, only albacore can legally be sold in canned form as "white meat tuna"; in other countries, yellowfin is also acceptable. While in the early 1980s, canned tuna in Australia was most likely Southern bluefin; it was usually yellowfin, skipjack, or tongol (labelled "Northern bluefin"). As tunas are often caught
Skipjack shad is necessary to keep turbidity and siltation levels down, as this species will only live in waters that are clear to moderately turbid. Sampling of skipjack shad has been performed through the use of gillnetting and electro fishing. These methods are best utilized beneath impoundments over sand or gravel substrates around spawning time each spring, where they are most abundant. Sampling should be done across the entire native range to document its abundance in different locations and human induced changes. For now, skipjack shad have a stable abundance in the southern part of its distribution, and need more management plans