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Blackbar Soldierfish

Myripristis jacobus

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Blackbar Soldierfish (Myripristis jacobus): Red, deep-bodied fish with huge eyes and a broad black band along the rear gill cover.
Original identification illustration of Blackbar Soldierfish. Features may vary.

Fun facts for your next surface interval

  • The black bar follows the gill-cover membrane, not the middle of the body.
  • Unlike Holocentrus squirrelfish, it lacks the long spine at the cheek corner.
  • Its menu includes drifting fish larvae as well as tiny crustaceans.

Florida and local context

Florida Keys region; Palm Beach occurrence not verified in the cited museum checklist: Smithsonian species data report includes Florida Keys-region occurrence coordinates, for example [[24.3228, -82.001], [24.4213, -82.0025]]. Lake Worth Lagoon row has no verified mark; potential only.

Documented regional presence is not a guarantee of an encounter or a measure of how common this animal is at your dive site.

How to recognize this animal

A blackbar soldierfish is red and deep-bodied, with a very large eye and a blunt, rounded forehead. The defining dark band follows the rear edge of the gill cover down toward the pectoral base. Another dark band crosses the eye. Most fins have white tips, while the pectoral fins lack the same conspicuous white edging.

Size and life stages

It reaches 25 centimeters, approximately ten inches. The body is deeper and more oval than that of a typical Holocentrus squirrelfish. Large rough scales, a forked tail and a distinctly notched dorsal fin give even smaller individuals the characteristic soldierfish silhouette. A red fish's apparent darkness underwater is not a reliable way to judge its size or species.

Habitat and where to look

Reef habitat is the documented setting, with records from one to 210 meters. The exceptionally broad depth range includes waters well beyond recreational diving. Around accessible reefs, inspect shaded spaces from outside rather than entering a hole to force a view. A dark shelter can make the gill-cover band difficult to separate from ordinary shadow.

Range and local context

The documented range extends from North Carolina to Brazil, with populations elsewhere in the Atlantic. Smithsonian distribution points document the Florida Keys region. Florida Museum lists this species only as a potential, unverified Lake Worth Lagoon occurrence; it is not a confirmed Palm Beach record in that checklist. This broader Florida inclusion should not be read as a promise of a local encounter.

What is on the menu?

Its recorded foods include zooplankton, fish larvae and small mobile crustaceans. Those items distinguish a plankton-and-small-animal feeder from an algae grazer despite its compact shape. The upward-angled mouth can take prey above or ahead of the fish. An observation of a fish sheltering in daylight does not reveal everything about its feeding activity.

Daily habits and behavior

The huge eye, bright red body and shelter-associated reef appearance are useful together. Fin position changes the outline: the dorsal has a deep notch between the spiny and soft portions rather than two completely unrelated fins. White fin tips may remain visible when the red body looks dark, making a careful second look worthwhile without repeatedly flashing a resting fish.

Mating and the next generation

The Smithsonian data identify pelagic eggs and larvae. This means that the earliest stages develop in open water rather than as a brood attached to a reef wall. The sources reviewed do not supply a Palm Beach breeding calendar or prove a spawning aggregation at a particular dive site, so neither should be inferred from several fish sharing shelter.

Look-alikes and identification traps

Squirrelfish in Holocentrus have a more pointed head and a prominent spine at the lower rear corner of the cheek. Myripristis jacobus lacks that long cheek spine and instead carries the broad black gill-cover band. Red color and big eyes alone cannot distinguish the groups; an unobstructed side view of the head is especially valuable.

Observe without disturbing

Photograph from outside a crevice, leaving the shelter entrance clear and avoiding contact with the reef. Do not try to expose or touch a hidden fish to demonstrate the absence of a cheek spine. A single side image that records the black band, large eye and overall deep body is more useful than repeated close flashes.

Harvest, protection and eating safety

Restricted live collection only; no spearing; protected collection areas apply

Can it be hunted or harvested?

Blackbar Soldierfish (Myripristis jacobus) falls under Florida recreational marine-life rules (explicit blackbar soldierfish listing). It is not a blanket statewide no-take species, but food harvest is not authorized under these live-only rules. Where lawful, a saltwater fishing license is required unless exempt, and the fish must be landed and kept alive with adequate circulation or aeration. Limit: five of this species within 20 marine-life organisms per person per day; two-day possession: ten of this species within 40 total. No species-specific statewide size limit is listed. Recreational sale is prohibited.

Florida seasons and areas

No species-specific annual closed months are listed for this live-collection category. Collection is prohibited inside the designated Blue Heron Bridge dive-site boundary, throughout Biscayne National Park and in John Pennekamp Coral Reef State Park for this listed fish/group. Florida marine-life requirements also apply in adjacent federal waters on both coasts. Additional sanctuary, park and refuge zones can prohibit taking. The designated Western Dry Rocks area is closed to all fishing April 1 through July 31 each year.

Can it be speared?

No. Spears are not an authorized recreational method for this live-collection species. Only approved live-collection gear, such as permitted hand-held nets, barrier/drop nets or a slurp gun, may be used where collection is otherwise lawful. An open calendar does not override a protected area or the requirement to keep the animal alive.

Is it safe to eat?

Not a food-harvest species under the applicable live-only rules; this guide does not establish it as safe to eat. Do not treat lawful aquarium collection, small size or lack of a named consumption advisory as food-safety clearance. Florida DOH guidance depends on the fish, capture water and consumer, with extra considerations for children and pregnancy. Cooking does not eliminate all marine toxins.

Before you act: This recreational overview is not permission to collect or spear at your dive site. Confirm the species, date, management area, state or federal waters, gear, licenses and current local closures. Identification artwork cannot establish an identification or guarantee seafood safety.

Official rules and health guidance

Reviewed 2026-11-10. Rules and advisories can change; check the linked authorities before harvesting or eating.

Sources and review

Reviewed 2026-11-10.

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