Catch a Fishli is a game to catch fish on Twitter. In addition, it wants to raise awareness of endangered fish species. The fish in Catch a Fishli are all endangered, some even critically. So, please, only catch these fish on Twitter.
The red snapper is on the Greenpeace Red List Fish. Greenpeace says the red snapper is overfished by commercial and recreational fisheries.
The IUCN lists Atlantic cod as vulnerable, which means it faces a high risk of extinction in the wild in the medium-term future. Atlantic cod is on the Greenpeace Red List Fish because of overfishing and populations being in poor condition.
The IUCN lists Atlantic bluefin tuna as endangered (facing a very high risk of extinction in the wild) and the Southern bluefin tuna as critically endangered (facing an extremely high risk of extinction in the wild). Greenpeace says bluefin tuna are severely depleted and still being overfished.
Tiger shark are classified as near threatened by the IUCN, which means they are likely to be threatened in the near future. Sharks, in general, are on the Greenpeace Red List Fish. Greenpeace estimates that only a 10% of the original shark populations remain.
So, please, only catch these fish on Twitter.