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The poison is produced by several types of bacteria obtained from the fish's diet. [10] As a result of these three defenses, porcupinefish have few predators, though adults are sometimes preyed upon by sharks and orcas. Juveniles are also preyed on by Lysiosquillina maculata, tuna, and dolphins. [5]
As of July 2017, the International Union for Conservation of Nature (IUCN) listed 1,000 critically endangered fish species, including 87 which are tagged as possibly extinct. [1] [2] Of all evaluated fish species, 3.0% are listed as critically endangered. The IUCN also lists four fish subspecies as critically endangered.
[1] [6] The tsunami fish is the last surviving specimen of those five knifejaws. The boat broke loose and went adrift during the March 11, 2011 TÅhoku earthquake and tsunami . On March 22, 2013, the boat washed onshore in North America at Long Beach, Washington , more than 4,000 miles (6,400 km) from its starting point.
The smallmouth bass (Micropterus dolomieu) is a species of freshwater fish in the sunfish family (Centrarchidae) of the order Centrarchiformes. [4] It is the type species of its genus Micropterus (black basses), and is a popular game fish sought by anglers throughout the temperate zones of North America, and has been spread by stocking —as well as illegal introductions—to many cool-water ...
The common name, hardhead catfish, is derived from the presence of a hard, bony plate extending rearward toward the dorsal fin from a line between the catfish's eyes. [4] It is an elongated marine catfish that reaches up to 28 in (70 cm) in length and 12 lb (5.5 kg) in weight. [ 5 ]
Hypostomus plecostomus, also known as the suckermouth catfish or common pleco, is a tropical freshwater fish belonging to the armored catfish family (Loricariidae), named for the longitudinal rows of armor-like scutes that cover the upper parts of the head and body (the lower surface of head and abdomen is naked soft skin).
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The rougheye rockfish (Sebastes aleutianus) is a rockfish of the genus Sebastes.It is also known as the blackthroat rockfish, rougheye seaperch, blacktip seaperch, longlife seaperch or the blacktip rockfish and grows to a maximum of about 97 cm (38 in) in length, [1] with the IGFA record weight being 14 lb 12 oz (6.7 kg). [2]