Coral Update 
Ultra RAH 
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Mithrax sculptus 2-4 cm
Mithrax sculptus, also known as the algae-eating crab. This crab loves Valonia sp bubble algae and is much more active at night.
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For your zone EUROPE la France, delivery fees are 24,90 € with carrier EXPRESS 24H Vivant - Live - Lebenden - Vivo - Levend
Delivery fees for your zone
EUROPE la France
| See all delivery fees | Cart amount | Delivery fees |
|---|---|---|
| EXPRESS 24H Vivant - Live - Lebenden - Vivo - Levend | 0 à 248,99 € | 24,90 € |
| 248,99 à 100 000 € | Offert |
Delivery fees for other zones:
| Country | Carrier | Cart amount | Delivery fees |
|---|---|---|---|
| ZONE 300 SUISSE | Suisse - EXPRESS 24H Vivant - Live - Lebenden - Vivo – Levend | 0 à 100 000 € | 44,90 € |
| ZONE EUROPE1 200 | EXPRESS 24H Vivant - Live - Lebenden - Vivo - Levend | 0 à 248,99 € | 29,89 € |
| 248,99 à 100 000 € | Offert | ||
| ZONE EUROPE2 210 | EXPRESS 24H Vivant - Live - Lebenden - Vivo - Levend | 0 à 248,99 € | 39,90 € |
| 248,99 à 100 000 € | 39,90 € | ||
| EUROPE la France | EXPRESS 24H Vivant - Live - Lebenden - Vivo - Levend | 0 à 248,99 € | 24,90 € |
| 248,99 à 100 000 € | Offert |
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Data sheet
- Delivery price Europe
- Fixed price €29 - Offered starting from €249 of living*
- Minimum order amount for live products
- 50€ excluding shipping costs. For the well-being of the animals, do not make them travel alone.
- Approximate size
- 2-3 cm
- Maintenance
- Easy
- Temperament
- Peaceful
- Food
- Alguivore
- Reef compatibility
- Compatible
- Recommended number
- Several individuals
- Price according to size
- It looks like you only provided the letter "M." Could you please provide the full text you would like translated?
- Delivery date
- Choose your delivery day at the "Address" step in your cart.
- Reproduction
- Possible
- Package information for the winter period
- A hole is made in the cardboard to supply the chemical heater with oxygen.
En savoir plus
Mithrax sculptus – Algae-eating Valonia Crab
The Mithrax sculptus, commonly known as the algae-eating crab, is essential in the natural fight against Valonia sp. bubble algae. This crab, native to the Caribbean, is recognized for its effectiveness, especially when introduced in sufficient numbers in a reef aquarium.
A Formidable Nocturnal Cleaner
Primarily active at night, the Mithrax sculptus sneaks between live rocks in search of algae to consume. It particularly targets Valonia, helping to regulate their proliferation without resorting to chemical treatments.
Caution, though: if their number is insufficient, the Valonia can grow more rapidly than what the crabs can consume. In case of high presence, we recommend 2 Mithrax sculptus for 100 liters.
Fighting Valonia
Both the green and red species are effective against Valonia, but the Mithrax sculptus crab (green) is often recommended for its slightly superior ability to control these algae.
A Rigorous Selection
Our Mithrax sculptus come exclusively from a reputable Caribbean exporter. This meticulous selection ensures the effectiveness of our specimens, unlike some fake Mithrax crabs that have no effect on Valonia in marine aquariums.
They travel in groups of up to 10 individuals per bag. It's common for a crab to arrive without a claw due to group life: this does not hinder its feeding, as the claw naturally regrows after a few molts.
Maintenance Conditions
- Activity: nocturnal
- Recommended volume: from 50 to 100 liters, adjust according to the invasion
- Compatibility: corals, invertebrates, fish
- Diet: Valonia bubble algae, detritus
Why Choose Mithrax sculptus?
- Natural Valonia algae eater, without chemicals
- Nocturnal crab, active and discreet
- Rigorous selection from a specialized Caribbean exporter
- Essential in a reef aquarium facing bubble algae
Adopt a Mithrax sculptus for effective regulation of Valonia bubble algae. With its nocturnal behavior and compatibility with all reef elements, this useful and discreet crab is an excellent ally for maintaining the balance of your marine aquarium.
Reviews (56) - Review moderation
77% (43)
16% (9)
4% (2)
2% (1)
2% (1)
Magnifique
Livré en pleine forme et très actif le soir (animal nocturne), il est aussi très pacifique et très beau !
By Barthélémy P. the 03/28/2024
Tout mignon
Tres content de mon petit crabe , sauvage mais en pleine santé
By Julien C. the 01/04/2024
Sympa à observé
Assez sympa à observé, il a élu domicile dans un Stylophora, il mange les algues aux alentours. Le terme raffole des Valonia est peut être un peu fort pour le mien, il marche dessus sans y prêter attention. Débarrasse très bien les autres algues cela dit.
By Kevin B. the 07/15/2023
Nitrax
Je viens de commander un nitrax reçus en parfaite état ayant préciser la taille de mon bac étant un débutant dans l’aquariophilie marine je suis ravis d’avoir ce tout petit crabe dans mon bac merci je pense qu’il est nécessaire de resseigner le volume du bac pour la taille moi il est tout petit ceux que je voulais parfait
By Damien R. the 04/21/2023
Crabe émeraude
Arrivé en excellente santé. A peine mis dans l'aquarium qu'il a déjà commencé à se nourrir des algues. Il est efficace mais très discret et plutôt nocturne.
By Julien M. the 04/15/2023
Mithrax sculptus, also known as the algae-eating crab. This crab loves Valonia sp bubble algae and is much more active at night.
€20.90
In Stock