Fish identification archive / Coral clinging crab

Coral clinging crab

Mithrax hispidus

Fun facts for your next surface interval

The claw tips have a spoon-like form. [source]
Its early development includes two zoeal stages and a megalopa. [source]
Older literature under Mithrax caribbaeus can refer to the same accepted taxon. [source] [source]

Florida and local context

Florent Charpin’s species gallery identifies the photographed animal as Mithrax hispidus and explicitly captions the photograph Blue Heron Bridge, Florida. This is a source-labeled photograph, not an independently reidentified voucher or a current sighting guarantee.

A documented past record does not establish present abundance or guarantee an encounter.

Sources: Named-site photograph: source identification, not independently reidentified

How to recognize this animal

A bulky crab with a reddish-brown shell, prominent side spines and hairy legs that may show yellow bands. Spoon-like claw tips and paired rostral horns are useful supporting clues, not a complete diagnosis.

Sources: Smithsonian Bocas species account via InvertEBase

Size and life stages

The Smithsonian Bocas account reports a carapace up to 10 cm long. That measures the shell, not the span across the legs; the directory’s whole-animal length filter is left unassigned.

Sources: Smithsonian Bocas species account via InvertEBase

Habitat and where to look

The larval-study authors describe adults on sand, corals and rocks in the western Atlantic. Search exposed margins of shelter without pulling apart rubble or reaching beneath ledges.

Sources: Santana, Pohle and Marques 2003: cultured larval stages

Range and local context

The institutional account lists Bermuda, the Bahamas and West Indies south to Brazil. The named Blue Heron Bridge photo is the local occurrence evidence, separate from the broad range.

Sources: Smithsonian Bocas species account via InvertEBase

What is on the menu?

No sufficiently detailed species-specific diet was verified in the sources used for this profile. Spoon-like claws alone do not justify calling this crab an obligate algae eater or assigning it a local prey list.

Sources: Smithsonian Bocas species account via InvertEBase; Santana, Pohle and Marques 2003: cultured larval stages

Daily habits and behavior

Watch the legs and claws during an undisturbed sighting rather than assuming that a stationary crab is feeding. A reliable local daily-activity schedule was not established in this review.

Sources: Smithsonian Bocas species account via InvertEBase; Santana, Pohle and Marques 2003: cultured larval stages

Mating and the next generation

Laboratory cultures documented two zoeal stages followed by a megalopa before the juvenile crab stage. Those developmental stages do not establish a spawning season at Blue Heron Bridge.

Sources: Santana, Pohle and Marques 2003: cultured larval stages

Look-alikes and identification traps

Older accounts may separate Mithrax caribbaeus, a name treated with this species in the current accepted-name framework. Do not count that historical name as an additional local species.

Sources: Santana, Pohle and Marques 2003: cultured larval stages; WoRMS: accepted name and species identity

Observe without disturbing

Keep hands away from claws and leave the animal in its shelter. A photograph showing shell edges and legs is more useful than forcing it into an open pose.

Sources: Smithsonian Bocas species account via InvertEBase

Harvest, protection and eating safety

Unknown: exact harvest rules need verification

The neutral gray status means the rules or scope have not been fully verified. Exact species and jurisdiction clearance remains unresolved. Unknown is not a protected or prohibited classification.

This color is a qualified summary, not permission to collect or a guarantee that a particular animal is safe to eat.

Can it be hunted or harvested?

Mithrax hispidus is not one of the named Mithraculus ornamental crabs. Neither live-only collection nor food harvest is inferred by common-name similarity. This review does not establish a bag, size, method or season allowance for this exact taxon.

Florida seasons and areas

Annual season and current-trip openness are both unverified. Absence of a listed closure is not affirmative evidence of year-round harvest. Check the mapped site before any take. Blue Heron Bridge closes listed marine-life collection, not all county fishing. Biscayne prohibits ornamental collection without a superintendent permit and has a mapped March 1–May 31 fishing/possession closure effective in 2026, with a stowed continuous-transit exception. Pennekamp disallows tropical-fish collection and spearfishing. Key Largo Management Area prohibits tropical-fish take, marine-invertebrate take except specified lobster/stone-crab activities, and spearfishing. Sanctuary Preservation Areas prohibit fishing/collection except expressly stated exceptions. These are site rules, not whole-corridor bans.

Can it be speared?

Species-specific spearing clearance is unverified; do not treat a missing prohibition as permission. FWC restricts spearfishing near public swimming beaches, fishing piers/bridges, jetties and in state parks. The Long Key-north Monroe restriction concerns state waters; Key Largo Management Area has a separate prohibition. Federal location alone is not clearance.

Is it safe to eat?

No food-safety clearance, recipe or meal frequency is established. Consult current Florida Health guidance for the animal, capture site and consumer. A legal allowance does not establish that a catch is safe to eat. No dated species-matched local menu evidence was verified.

Mithrax hispidus is not one of the named Mithraculus ornamental crabs. Neither live-only collection nor food harvest is inferred by common-name similarity.

This review covers the Vero Beach–Key Largo Atlantic corridor: Indian River, St. Lucie, Martin, Palm Beach, Broward, Miami-Dade and Monroe counties. Florida Atlantic state waters and South Atlantic federal waters are distinct jurisdictions. Do not extend a state-water season tag to federal waters or transfer Atlantic rules to Gulf-side Keys waters. Park and sanctuary boundaries can override a species allowance.

Before you act: Confirm the species, date, exact management area, state or federal waters, gear, licenses and current local closures. A local occurrence record never grants permission to take an animal.

Official rules and health guidance

Reviewed 2026-11-11. Rules and advisories can change; check the linked authorities before acting.

Identification and source cautions

Mithrax hispidus is the accepted name; Damithrax hispidus is an older combination.
Distinct from the existing channel clinging crab, Maguimithrax spinosissimus.
The local identification is the cited photographer or publisher’s identification; it has not been independently reidentified from a specimen.
Broad range or non-Florida research does not establish abundance, spawning dates or encounter probability at this Florida site.
Unverified species-specific details are identified in the relevant section rather than inferred from related animals.

Sources and review

Biology and taxonomy reviewed 2026-11-11. Photographs on cited sites are reference material and are not reproduced here.

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