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Synanceia is a genus of ray-finned fish belonging to the subfamily Synanceiinae, the stonefish, which is classified within the family Scorpaenidae, the scorpionfish and relatives. Stonefish are the most venomous fish known; stings can be fatal to humans. [2] [3] They are found in the coastal regions of the Indo-Pacific.
The reef stonefish is the most venomous fish in the world. [8] Its dorsal area is lined with 13 spines, each of which has two venom sacs. [8] The spines are sharp and stiff and have been known to pierce boot soles. [14] Stonefish venom can be fatal at a dose of only 18 mg, which the fish is capable of releasing with only six of its thirteen spines.
Purple with a black mask beginning at the mouth and ending at the base of the dorsal fin. 6 cm (2.4 in) Blue assessor: Assessor macneilli: Yes: Entirely navy blue with white edging of the dorsal fin. 7 cm (2.8 in) Royal gramma: Gramma loreto: Yes: Purple head and anterior, abruptly changing to yellow about halfway down the body.
The variation ("polymorphism", in this case, a "color morph") most commonly found is pure blue, dark blue, or light blue, although observers find the aqua, purple, or orange variation throughout the ocean. These sea stars may grow up to 30 cm (11.8 in) in diameter, with rounded tips at each of the arms; some individuals may bear lighter or ...
Atlantic blue tangs act as cleaners by grazing algae as well as eating molted skin and parasites off of the client's flesh once the client comes to the cleaning station. The most common client in these interactions is the green turtle , in which the blue tang inspects the green turtle by nipping its head, limbs, tail, and carapace .
Glaucus atlanticus is the blue sea slug shown here out of water on a beach, and thus collapsed; however, touching the animal directly with your skin can result in a painful sting, with symptoms similar to those caused by the Portuguese man o' war The slug in the water
The strain marinum was first identified by Joseph D. Aronson in 1926 and it is observed as a pathogenic mycobacterium [3] causing tuberculosis-like infections in fish (mycobacteriosis) and skin lesions in humans. [3] [4] The bacteria grows optimal at a temperature around 30 °C. [4]
The blue grenadier (also known as hoki, blue hake, New Zealand whiptail, or whiptail hake, Macruronus novaezelandiae) is a merluccid hake of the family Merlucciidae found around southern Australia and New Zealand, as well as off both the Atlantic and Pacific coasts of South America from Peru to Brazil [1] at depths of between 10 and 1,000 m (33 and 3,300 ft).