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Purple Reeffish

Chromis scotti

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Original identification illustration of Purple Reeffish (Chromis scotti), adult, viewed from the side.
Illustration for identification. Features may vary.

Fun facts for your next surface interval

  • Purple is not a lifetime uniform: adults can be gray-brown while youngsters are blue-purple.
  • Dad handles ventilation: males guard and aerate eggs attached to the bottom.
  • Tiny but not shallow-minded: the species is associated with outer slopes and deeper patch reefs.

Florida and local context

Lake Worth Lagoon, Palm Beach County, Florida: Florida Museum marks Chromis scotti as verified in Lake Worth Lagoon.

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

Purple Reeffish is a small oval damselfish with a deeply forked tail whose tips are rounded rather than sharply pointed. Adults can be gray-brown above and pale below, with blue spots or short markings on the head and body. Juveniles are often much more uniformly purple-blue. The adult artwork shows the quieter coloration instead of promising that every fish will look vividly purple.

Size and life stages

The reported maximum is about 10 cm. Small size and muted adult colors make careful observation useful, especially against a textured reef background. Do not estimate age from color alone, because adult patterns vary. A clear view of the flank and caudal fin is more informative than a tightly cropped portrait of the blue markings around the eye.

Habitat and where to look

Steep outer reef slopes and deeper patch reefs are characteristic habitat. FishBase describes frequent records in the 15–30 m range, while broader documented limits extend beyond that. The range is ecological information, not a dive-depth recommendation. Look only within your planned route, training and conditions, and do not follow a small fish down a slope to obtain a photograph.

Range and local context

Its western Atlantic range includes southern Florida, the Caribbean and northern Brazil. Florida Museum also provides a verified Lake Worth Lagoon record, so this is not merely a species presumed to reach Palm Beach from a broad map. That record does not make a deeper-reef fish a routine shallow-water encounter. Neither a checklist nor this illustration guarantees a sighting.

What is on the menu?

Purple Reeffish feeds on zooplankton. The prey may be nearly invisible to a diver even when the fish is making repeated small feeding movements in the water. Watch the rhythm and direction of its movements rather than looking only for a dramatic bite. Feeding just above structure is different from scraping a patch of algae directly off the bottom.

Daily habits and behavior

It occupies the reef and nearby water column, so both open water and shelter deserve attention. A short natural sequence may show a fish changing position around the same patch. The name alone should not encourage a search for a bright purple flash. Give the animal time to turn and reveal the body pattern before approaching more closely.

Mating and the next generation

Breeding pairs place adhesive eggs on the substrate. Males guard and aerate the eggs, rather than abandoning them after release into open water. The larval stage is pelagic. Nest-directed behavior therefore has a different meaning from an adult hovering to feed. A diver should leave potential nesting surfaces untouched and avoid blocking the tending fish's access.

Look-alikes and identification traps

Blue Chromis is usually a more consistently brilliant blue fish with conspicuous dark borders along its pointed tail lobes. Yellowtail and Whitetail Reeffish have different contrasting tail patterns. Purple Reeffish adults can be less immediately colorful than any of those names suggest. Combine the rounded tail tips, blue markings and overall shape rather than identifying by hue alone.

Observe without disturbing

Stay at a safe planned depth and allow the fish to choose whether it remains visible. Never chase it below a ledge, place a hand on the reef for stability or use food to hold it in the water column. For identification, record a side view and the approximate habitat. An uncertain but undisturbed encounter is preferable to a forced photograph.

Harvest, protection and eating safety

Restricted marine life: live collection only; no spearing

Can it be hunted or harvested?

Purple Reeffish is regulated live ornamental marine life, not an ordinary food-fishing target. FWC lists no species-specific size limit for this damselfish. A saltwater fishing license is required unless exempt. Fish must be landed and kept alive with adequate aeration or circulating water. Daily limit: five of this species within 20 marine-life organisms; possession: ten within 40. Recreational sale is prohibited.

Florida seasons and areas

No recreational closed months are listed for this species in the reviewed marine-life rules. Collection is prohibited within the designated Blue Heron Bridge dive site. Florida marine-life rules also apply in adjacent federal waters. Sanctuary no-take zones and other park or refuge restrictions can close otherwise eligible areas; check the exact site before collecting.

Can it be speared?

Prohibited. FWC expressly includes damselfishes among ornamental reef-fish families that cannot be taken by spearing. Chromis and reeffishes are damselfishes too.

Is it safe to eat?

This live-collection classification is not an eating-safety approval. No species-specific Florida consumption clearance was verified. Do not assume a fish is safe because it is small, colorful or absent from an advisory chart. Marine toxins can cause illness despite cooking; consult current local health guidance rather than using this identification page as permission to eat it.

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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