Weever fish

Since sea snake venoms are discussed here, it is appropriate to review other vertebrate venoms also. Unfortunately, very few investigations have been done on the venoms of other marine vertebrates. It is known that some fish secrete venoms from their spines. The fishes known to have venoms are the scorpion fish (family Scorpaenidae), weever fish (family Trachinidae), catfish (order Siluriformes there are 31 families), stargazers (family Uranoscopidae), toad fish (family Batrachoidi-dae), and stingrays (suborder Myliobatoidea). 

There is 5-hydroxytryptamine in weever fish venom besides protein. It is believed that local pain is attributed to the presence of 5-hydroxytryptamine (27). Other small compounds such as histamine, adrenaline, and noradrenaline are also present in the weever fish (28). 

Some fish are venomous and have means of delivering venom to other animals. This is accomplished, for example, by spines on weever fish. The infamous stingray has a serrated spine on its tail that can be used to inflict severe wounds, while depositing venom from specialized cells along the spine. The venom increases the pain from the wound and has systemic effects, especially on the cardiovascular system. 

Dermatoses caused by fish spines (sting rays, scorpion fish, weever fish)... 

There are various species of poisonous fish that possess specialized organs (an apparatus or glandular structure) for secreting toxic substances. They belong to two different classes the Condroitti (sting-raysj and Osteoitti (weever-fish, scorpion-fish, morays) (Table 7). 

The most likely contact in our seas is with stingrays and weever-fishes. These fish, which live on sandy bottoms half-hidden under the sand, sting man with their spines when they are trodden on inadver-... 

Osteoitti Trachinidae (weever fish) Trachinus araneus Trachinus draco... 

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