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Holocentrus rufus Longspine squirrelfish

Holocentrus rufus is commonly referred to as Longspine squirrelfish. Difficulty in the aquarium: Pas pour l'aquarium!. Toxicity: Toxic hazard unknown.


Profilbild Urheber Dr. Paddy Ryan, USA

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Courtesy of the author Dr. Paddy Ryan, USA . Please visit www.ryanphotographic.com for more information.

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lexID:
2714 
AphiaID:
276189 
Scientific:
Holocentrus rufus 
German:
Langstachel-Husar 
English:
Longspine Squirrelfish 
Category:
Poissons-Soldats 
Family tree:
Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beryciformes (Order) > Holocentridae (Family) > Holocentrus (Genus) > rufus (Species) 
Initial determination:
(Walbaum, ), 1792 
Occurrence:
Barbados, Guadeloupe, Suriname, Antigua and Barbuda, Aruba, Belize, Bermuda, Brazil, British Virgin Islands, Columbia, Costa Rica, Cuba, Curacao, Dominica, Dominican Republic, Florida, French Guiana, Grenada, Guatemala, Gulf of Mexico, Guyana, Haiti, Honduras, Jamaica, Lesser Antilles, Martinique, Mexico (East Pacific), Montserrat, Nicaragua, Panama, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, The Bahamas, the Caribbean, the Cayman Islands, the Netherlands Antilles, Trinidad and Tobago, USA, Venezuela, Virgin Islands, U.S., West Indies 
Marine Zone:
Subtidal, sublittoral, infralittoral, deep zone of the oceans from the lower limit of the intertidal zone (intertidal) to the shelf edge at about 200 m water depth. neritic. 
Sea depth:
0 - 32 Meter 
Size:
9.84" - 13.78" (25cm - 35cm) 
Temperature:
75.02 °F - 82.58 °F (23.9°C - 28.1°C) 
Food:
Crabs, Crustaceans, Edible crab, Invertebrates, Predatory, Schrimps, Snails, Starfishs 
Difficulty:
Pas pour l'aquarium! 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Least concern (LC)  
Related species at
Catalog of Life
:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2022-10-30 18:30:05 

Info

The soldierfish is nocturnal, inhabits clear reefs, and is found near cave mouths and holes.
Longspine hussars move into sandy areas and grassy flats at night to feed on crabs, shrimp, snails, and brittle stars.

The hussar is marketed fresh, but is not particularly popular as a food fish.

Consuming this animal can trigger the dreaded Ciguatera fish poisoning.

The cause is to be found in certain unicellular organisms (dinoflagellates, such as Gambierdiscus toxicus), which produce toxins in the body of harmless and otherwise well-tolerated food fish, which can lead to various symptoms in humans:

Initial symptoms: Sweating, numbness and burning, especially around the mouth.
This is followed later by chills, dizziness, nausea, vomiting, diarrhoea, abdominal pain and muscle cramps. Paresthesia (itching, tingling, numbness) on the lips, the mucous membrane of the mouth and especially on the palms of the hands and soles of the feet, numbness in the hands, feet and face.

Paralysis of the skeletal muscles, including the respiratory muscles, dizziness and coordination disorders may occur. Muscle pain, joint pain, headache, toothache, shivering and sweating are further symptoms. A general feeling of weakness develops. Consumption of alcohol aggravates the symptoms.

Less common are life-threatening drops in blood pressure and palpitations (tachycardia) or the opposite. Overall, the condition is very rare, but it leads to death in about 7% of cases.

Attention: An antidote does not exist!

First aid:
As early as possible: Pump out the stomach, if vomiting does not occur by itself
Activated carbon (medical carbon) give to bind the toxins: dosage is 1 g / kg body weight.
Promote excretion: As an acute therapy, the attending physician can give an infusion of 20% mannitol (sugar alcohol). The mechanism of action is unclear. Mannitol promotes urine excretion, so this measure should only be taken after fluid and electrolytes have been supplemented to prevent a circulatory collapse.
Rehydration with fluid and electrolytes is a sensible measure anyway, especially after vomiting and diarrhoea.
In life-threatening situations, plasma expanders should be given, i.e. infusions that increase the volume of the blood and remain in the circulation for a long time.

Cardiovascular symptoms may require further medical intervention: Atropine can be given if the heartbeat slows down, dopamine if the blood pressure drops.

You can find more information here:

http://www.dr-bernhard-peter.de/Apotheke/seite116.htm

Synonym: Perca rufa Walbaum, 1792

External links

  1. FishBase (multi). Abgerufen am 07.08.2020.
  2. IUCN Red List of Threatened Species (multi). Abgerufen am 30.10.2022.
  3. World Register of Marine Species (WoRMS) (en). Abgerufen am 30.10.2022.

Pictures

Commonly

Copyright Dr. Paddy Ryan
1
Copyright Dr. Paddy Ryan
1
© Anne Frijsinger & Mat Vestjens, Holland
1
Copyright Prof. Dr. Robert A. Patzner
1
Holocentrus rufus, D.R. - Sosua - Airport The Wall 3, copyright by Aitsch-Pi
1

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