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The stinging catfish is able to deliver a painful sting to humans. Poison from a gland on its pectoral fin spine has been known to be extremely painful. This species grows to a total length of 30 cm (12 in), and is an important component of local commercial fisheries. It is also farmed and found in the aquarium trade. [2]
Edwardsiella ictaluri (also known as enteric septicaemia of catfish, hole in the head disease [2] and ESC) is a member of the family Hafniaceae. The bacterium is a short, gram negative , pleomorphic rod with flagella.
They have the ability to inflict painful stings with venomous spines embedded in their fins. One of the largest species is the blue catfish, Ictalurus furcatus, specimens of which have been found to weigh over 50 kg (110 lb). The maximum length is 160 cm (5.2 ft) in the blue catfish and the flathead catfish. [5]
Worried about getting stung by a jellyfish at the beach? Here's how to navigate the worst-case scenario.
Fire ants also sting humans, Frye says, which can cause small pus-filled bumps on the skin, according to the Cleveland Clinic. Other symptoms: Ant bites are typically painful and itchy.
A sting from the striped eel catfish, Plotosus lineatus, may be fatal. While the vast majority of catfish are harmless to humans, a few species are known to present some risk. Many catfish species have "stings" (actually non-venomous in most cases) embedded behind their fins; thus precautions must be taken when handling them.
Jellyfish stings can trigger a complex immune response in human skin similar to the response to pathogens or allergens. When jellyfish venom , carried by the stinging cells of the animal ( nematocysts ), comes into contact with the skin, it interacts with various cells and substances in the body.
Irukandji syndrome is a condition that results from envenomation by certain box jellyfish. [4] In rare instances the sting may result in cardiac arrest and death. [5] The most common jellyfish involved is the Carukia barnesi, a species of Irukandji jellyfish. [4]