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Emerald Mithrax Crab
Mithrax sculptus
The Mithrax crab is the hardiest and perhaps the most useful crab to have in a home aquarium. Multiple specimens can be housed together in the aquarium if the tank is large enough for them to have their own territories.
It requires a tank of 30 litres or larger with plenty of rockwork and a sand bed to scavenge. The mithrax crab is reef compatible, and is the only crab that is herbivorous and will spend most of its time eating through hair algae, bubble algae and other pest algae's. The mithrax crab is a scavenger but will benefit from being fed herbivorous preparations.
Approximate Purchase Size: Medium 2cm - 4cm
Due to variations within each species, your aquatic life may not look identical to the image provided.

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Fish Statistics
- Minimum Tank Size:
- 30 litres
- Diet:
- Herbivore
- Origin:
- Caribbean
- Temp (C):
- 22-27 C
- Max Size:
- 7cm
- Family:
- Majidae
- Temperament:
- Semi-aggressive
- pH:
- 8.1 - 8.4
- Salinity:
- 1.020-1.025
- Care Level:
- Easy
- Compatibility:
- See Tank Mates Chart below
Buy Emerald Mithrax Crab
Medium 2 - 4cm
- 1 or more items - £9.50
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Tank Mates
We recommend pairing your Emerald Mithrax Crab with these other fish: