Home Environment The Stingers! Lion, Scorpion and Stone

The Stingers! Lion, Scorpion and Stone

The family Scorpaenidae is composed by several subfamilies which have in common a large and spiny head with a bony crest on the cheek.

They all wear venomous spines. The stings create a strong pain and a numb of the area injured and an extreme weakness.


This impressive defense way is also a system of preys capture. Usually on the bottom or hided under rocks or in corals, they are all carnivorous feeding crustaceans and fishes.


The Common Lionfish hunts sometimes during the day in blue water, amongst schools of small fishes. It takes characteristic attitudes: Fins opened and head down in order to attract fishes between their spines and to swallow them. They use also this comportment in order to repulse one intruder showing it their dorsal fin and their spines.

Others as the Scorpionfishes and Stonefishes prefer the camouflage technique in order to avoid predators and to feed. They are similar to the environment hunting on the lookout during the day and actively during the night. The inflicted injuries by the dorsal fin of these fishes are considered as the more dangerous venomous injuries and are potentially fatal.

The Lionfish sub family is colorful with red, purple, yellow and white straps. The pectoral and dorsal fins are long. The venomous system is composed by 6 to 13 dorsal spines. The pain is very strong during few hours with a swelling more or lest important decreases in the time. Usually, they hide during the day and hunt ay night. The Scorpionfish sub family is more or less colored and use the camouflage technique.

The venomous system is composed by 12 dorsal, one pectoral and three anal pines. The venom glands are inside the tissues around the spine. After the sting, the venom and some fragments of tissues stay inside the injury. From this fact, appear toxic effects and inflammations due to the presence of intruders in the skin, strong pain and swelling.


The Stonefish sub family uses the infallible camouflage technique. Their skin less colorful and irregular produces mucus helping to fix algae, coral debris or sand in order to increase their invisibility. The venomous system is composed by 13 dorsal erectable spines and pectoral and anal venomous spines.

These fishes are considered as the more venomous in the world. The venom is toxic for muscle, heart, neurons and blood. It is thermo labile around 50 degrees Celsius. The symptoms and gravity are depending on the injected dose of venom, the size of the fish and the subject injured. The pain is brutal and appears a swelling of the area and a cyanosis. The person can feel nausea and vertigo. Breathing or heat distresses can be fatal.  Some fatalities can appear by secondary complications as infections in lymph or blood or
by tetanus. Fortunately, stings are rare and most of the time under feet.

REPRODUCTION: a sexual reproduction provides ovoid or round eggs which are 1 mm size and larvae are pelagic. Drifting in current, the tiny juveniles stop on the bottom.

Treatment for Scorpaenidae injury:

- Immediately remove the injuried victim from the water to avoid sinking
- Immediately immerse the lesion in hot water for up to one hour. Do not use more than 45 degrees Celsius to avoid burning
- Breathing and heart medical check and act if necessary
- Prevent Choc and infections
- Only one serum is actually efficient against Stonefish injuries: Stonefish antivenin Common Wealth Serum Laboratories, Department of Health, Melbourne, Victoria, Australia


PREVENTION


- Do not touch anything under water
- Wear shoes with strong sole if you need to walk in Indo-Pacific Ocean lagoons
- Do not walk on stony bottoms and coral reefs

CONCLUSION

Enjoy the beauty of these fishes which are dangerous only for irresponsible divers, snorkelers or swimmers!

 

Read More in H2O


coco1.jpg
Coral reefs in Egypt's Red Sea can be likened to a desert oasis: the high metabolic activity of the reef ecology system makes it a primary source of
no%20bubble%201.jpg
By: Kimmo Hagman The weather conditions couldn't have been better for this early morning dive. The south Red Sea safari was starting to near its end
peter0.jpg
Peter Collings is one of the most well-known faces in diving and a real-life wreck detective. Over the years he has logged more than 6000 dives all
Banner

Coming Issue

 

Next edition in English

    next English issue will be available in March  ...

Calendar of events

August 2019 September 2019
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
Post Your Event Post Your Event

More Articles

DAHAB Life

Dahab. My home. Well, not really my home (I'm from Germany), but I have been coming to Dahab for more than 10 years and it has become my second home. I love the diving here and the surrounding desert....
Read More...

SAILING THE DESERT

Many have expressed surprise over this new tourism that has attracted the attention of thousands of travelers from all over the world, drawing them to Egypt throughout the year, to immerse into its de...
Read More...

UNDER WATER I CAN FLY…

Finally, it´s happening! For quite a while now I have been trying to organize a Pro Trainer Course with IAHD, the International Association of Handicapped Divers, as our Dive Center SUB SINAI wa...
Read More...

The Economic Value of Sea Cucumbers in the Egyptian Red Sea

Coral reefs in Egypt's Red Sea can be likened to a desert oasis: the high metabolic activity of the reef ecology system makes it a primary source of nutrients in an otherwise nutrient-poor sea. Witho...
Read More...

OUR KIDS AND DIVING

Is the child a small adult when it comes to diving? Definitely NOT. Participation of children in scuba diving is growing every year. Instructors, dive masters, parents and pediatricians are all...
Read More...

H2O Newsletter


Get diving news, trends, and business information delivered directly to your inbox!

Advertisement

Banner