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Actaeodes tomentosus Spiny-legged rock crab

Actaeodes tomentosusis commonly referred to as Spiny-legged rock crab. Difficulty in the aquarium: Very easy.


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lexID:
1120 
AphiaID:
209053 
Scientific:
Actaeodes tomentosus 
German:
Rundkrabbe 
English:
Spiny-legged Rock Crab 
Category:
Crabs 
Family tree:
Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family) > Actaeodes (Genus) > tomentosus (Species) 
Initial determination:
(H. Milne Edwards, ), 1834 
Occurrence:
(the) Maldives, Andaman and Nicobar Islands, Australia, China, Comores, Fiji, French Polynesia, Guam, Hawaii, Indian Ocean, Indo Pacific, Japan, Kenya, Madagascar, Mauritius, Mayotte, Mozambique, New Caledonia, Palau, Papua New Guinea, Philippines, Red Sea, Samoa, Solomon Islands, Somalia, South-Africa, Taiwan, Tansania, the Seychelles, Wallis and Futuna 
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 - 100 Meter 
Habitats:
Coral reefs, Intertidal zone, Tidal Zone, Seawater, Sea water 
Size:
up to 1.18" (3 cm) 
Temperature:
24,6 °F - 29,2 °F (24,6°C - 29,2°C) 
Food:
Algae, Carrion, Detritus, omnivore 
Difficulty:
Very easy 
Offspring:
Not available as offspring 
CITES:
Not evaluated 
Red List:
Not evaluated (NE) 
Related species at
Catalog of Life:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2024-03-31 18:11:33 

Info

Actaeodes tomentosus (H. Milne Edwards, 1834)
(formerly listed as Paractea monodi)!

Lives on coral reefs in the intertidal zone. Often this species crab is introduced with live stones. In the past, most crabs were simply discarded because of the fear that they would attack and eat other animals (fish as well as invertebrates).It seems to be ensured that they also eat meat, but prefer mainly algae as food.

If you get such a crab, put it in the filter tank.The other way around, if it is a crab that has other animals on its menu, then you have to act and remove it.

Ollie: Has long been considered a Paractea monodi (Monod's round crab).

Reader Daniel reports observing his Actaeodes tomentosus catching fish.Since it is actually described as peaceful in the MWL, I thought I'd let you know.I was able to observe the crab grab a Stonogobiops nematodes as it retreated into its burrow and began eating it.

Note from crab expert Ollie : "Primarily they are likely to be algae and detritus eaters. In general, I'm sure they'll take anything that comes into their claws, but active hunters/predators they are not."

Poisonous to eat !

Many species of the family Xanthidae can be poisonous, although they themselves have no poisonous apparatus (poisonous teeth, poisonous spines, poisonous glands in the skin), the consumption of these crustaceans can even be fatal for humans. Such animals are considered passive-poisonous.
The toxins of crabs (saxitoxin and tetrodotoxin) are produced by endobacteria and stored in the flesh of the crab, these e are highly potent and similar to the neurotoxins of puffer fish and just as deadly.
In its raw and cooked meat, consumption of the crab meat is toxic to humans!

Please be sure to clarify whether the meat of these crabs is toxic or non-toxic before eating it!
Call an emergency doctor immediately at the first signs of poisoning (e.g. breathing problems, muscle cramps)!

The good news is there’s no way you can be exposed to these toxins if you don’t try to eat these crabs – a bite or a jab isn’t going to do the job.

The bad news for those who unwittingly consume these crabs is that cooking the meat isn’t going to make the toxins any less effective.

Fortunately, toxic crabs don’t want to be eaten just as much as we shouldn’t be eating them, so they help us out with their glorious warning colours.

Synonyms:
Actaea tomentosa (H. Milne Edwards, 1834)
Zozymus tomentosus H. Milne Edwards, 1834

External links

  1. Crabs of Christmas Island (en). Abgerufen am 09.10.2023.
  2. Panzerwelten (de). Abgerufen am 07.08.2020.
  3. sealifebase (en). Abgerufen am 31.03.2024.
  4. Species Identifikation (en) (Archive.org). Abgerufen am 07.08.2020.

Pictures

Commonly


Husbandry know-how of owners

am 13.11.17#57
Zu mir kamen zwei dieser Tierchen über Lebendgestein. Beide waren ausschließlich nachtaktiv. Ich hatte sie schnell unter Verdacht sich an meinen Krustenanemonen und an einer Porites zu vergehen. Mehrfach wurden Ablegersteine mit Krustenanemonen in die Wohnhöhle verschleppt. Jetzt, wo beide raus sind, sehen die Krustenanemonen deutlich besser aus und die Porites hat sich unten herum wieder erholt. Ich muss allerdings dazu sagen, dass ich die Tiere auch nicht gefüttert hatte.
am 06.05.17#56
Man liest ja wahre Horrorgeschichten über diese Krabbe.
Habe selber mindestens 3 Stück von dieser Art im Becken, aber noch nix negatives festgestellt.
Liegt aber vielleicht auch daran, dass ich sie fast jeden Abend aktiv füttere.
Mittlerweile kenne ich die Wohnhöhlen aller Dreie. Kaum hält man Futter vor die Höhle, kommt auch schon das Scherchen raus, und angelt sich den Happen.
am 27.12.16#55
Ein Exemplar dieser Art habe ich in flagranti erwischt, wie es über einen schlafenden Synchiropus splendidus (Mandarinfisch) hergefallen ist, der leider nicht mehr zu retten war. Einen Tag später hat er den zweiten Mandarin, offenbar wieder schlafend, in seine Höhle geschleppt, wo ich leider nur einen toten Fisch bergen konnte. Vorher war die Krabbe unauffällig und wurde am Tag vor ihrem zweiten Fang sogar noch extra gefüttert.

Die erlegten Fische waren im Übrigen kerngesund und haben sogar noch am Abend des ersten Verschwindens abgelaicht.
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