riba pauk | weever fish | trachinus radiatus

Streeked weeverfish Aside of streaked weeverfish, in the Adriatic there are three types of weeverfish familiy; yellow, white and black. Streaked weeverfish grows 40 cm in length and reaches a weight of up to 1.5 kg. Color is yellowish-gray-brown. The upper body has dark spots that are sometimes linked. Its body is elongated and pressed into the side. His eyes are protruding, placed high on the head. His lower jaw is longer than the upper. The gill cover has a long spines facing backward. Scales on the body are strung diagonally. The poison is placed in the sting of the gill lid and spines in first dorsal fin. Its venom affects the nervous and circulatory system of a human. After being stung, one suffers severe pain that can last a long time, even twelve hours, after which it may occur fainting, vomiting, palpitations and high temperature, as well as other symptoms of the disorder in the body. The intensity of the symptoms will depend on the person's body stabbed as well as the size of the weeverfish. After the weeverfish stings it is best to seek medical help quickly, but by far is enough to immerse that body part in hot fluid with temperature higher than 40 °C, because the toxin is thermolabile. Deaths are rare but could occur. Weeverfish inhabits rocky, pebble and coral seabed and can be found at depths of 5 to 150 meters. In the fall and spring it is common in shallow areas along the coast, while in the warmest and the coldest part of the year much deeper. It spawns in late autumn and early winter. It is very voracious, and often feeds on small organisms that move along the seabed, such as small fish, crustaceans and mollusks, but is known to attack fish larger than itself lunging to them with poisonous spines.

Pauk mrkulj Pored pauka mrkulja u Jadranu žive još tri vrste iz obitelji paukovki, to su pauk žutac, bijelac i crnac. Mrkulj naraste u dužinu do 40 cm i dosegne težinu do 1,5 kg. Boje je žućkastosive do žućkastosmeđe. Na gornjem dijelu tijela ima crnkaste mrlje koje su mjestimično prstenasto povezane. Tijelo mu je izduženo i u boku stisnuto. Oči su mu izbočene i smještene visoko na glavi. Donja čeljust mu je duža od gornje. Na škržnom poklopcu ima dugu bodlju okrenutu prema natrag. Ljuske na tijelu su koso nanizane. Otrov je smješten u bodlji škržnog poklopca i na bodljama prve leđne peraje. Otrov pauka djeluje na živčani i krvožilni sustav čovjeka. Nakon uboda najprije se javi jaka bol koja može trajati dosta dugo, čak i dvanaest sati, nakon čega može uslijediti nesvjestica, povraćanje, lupanje srca i visoka temperatura, kao i drugi simptomi poremećaja u organizmu. Intenzitet tegoba će ovisiti o organizmu ubodene osobe i o veličini samog pauka. Nakon uboda pauka najbolje je brzo potražiti liječničku pomoć, no daleko od bilo kakve pomoći dovoljno je uroniti mjesto uboda u tekućinu temperature veće od 40 C° budući da je otrov termolabilan. Smrtni slučajevi su rijetki ali su se događali. Mrkulj živi na kamenitim, šljunkovitim i koraljnim dnima i možemo ga naći na dubinama od 5 do 150 metara. U jesen i proljeće čest je na plićim predjelima uz obalu, dok je u najtoplijem i najhladnijem dijelu godine dublje. Mrijesti se krajem jeseni i početkom zime. Vrlo je proždrljiv, a najčešče se hrani malim organizmima koji se kreću pri morskom dnu, kao što su sitne ribe, rakovi i mekušci, ali zna napadati i ribe veće od sebe na koje nasrće svojim otrovnim bodljama.

Benthos

Pauk mrkulj