Fish identification archive / Brown Chromis
Brown Chromis
Azurina multilineata
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Fun facts for your next surface interval
- Brown has accessories: look for yellow fin trim, a white rear spot and a black pectoral base.
- Group lunch, tiny portions: feeding schools rise over reefs to pick off plankton.
- From school to nursery duty: breeding males guard and aerate attached eggs.
Florida and local context
Florida-wide documented range; Palm Beach frequency not established: The cited distribution explicitly includes Florida. No Palm Beach abundance or guaranteed sighting is inferred.
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
Brown Chromis is an elongated oval fish, gray-brown to gray-green with a paler lower body. Look for a white spot near the rear base of the soft dorsal fin and a dark patch at the inner pectoral-fin base. The deeply forked tail has dark borders with yellowish trim, and dorsal and anal edges can be yellow. These details matter more than the plain-sounding name.
Size and life stages
FishBase gives a common total length near 12 cm and a maximum of 20 cm. A feeding group can contain fish of different apparent sizes, especially when they are spread through the water. Try to compare individuals at similar distances. Do not assume that a notably large or dark fish is another species without checking the fin-base markings.
Habitat and where to look
Reef tops, steep slopes and patch reefs provide feeding space close to shelter. The species often rises above the bottom rather than staying within a small crevice. Look at the edge of a group where individual outlines separate clearly. Maintain enough clearance above the reef to observe without placing your fins or equipment among the structures below.
Range and local context
Distribution records explicitly include Florida and Texas, the Caribbean and Brazil, with populations elsewhere in the Atlantic. Current accounts use Azurina multilineata rather than the older Chromis multilineata. The unverified Lake Worth Lagoon checklist row is not treated as proof of a local record. Florida occurrence is supported; Palm Beach abundance and encounter probability remain unspecified.
What is on the menu?
Brown Chromis feeds on zooplankton, with copepods important in published accounts. A school can appear suspended while individuals make small feeding movements into the surrounding water. Those movements are worth watching on their own. The food may be invisible at normal viewing distance, so avoid naming a prey species simply because other plankton or a jellyfish is nearby.
Daily habits and behavior
This is a daytime feeder that can gather in schools over the reef, sometimes together with Blue Chromis. A mixed aggregation requires individual identification rather than one label for everything in view. Watch how the group holds position relative to the reef and current, but do not swim into its center to create a dramatic burst of movement.
Mating and the next generation
Pairs breed using eggs that adhere to bottom surfaces, and males guard and aerate them. The eggs are not simply released to drift with the same water carrying the adults' food. A fish repeatedly attending a small surface may therefore be engaged in care rather than feeding. Observe without approaching closely enough to displace it from that area.
Look-alikes and identification traps
Blue Chromis shares the streamlined shape and forked tail but is strongly blue and lacks the same prominent pectoral-base patch. Purple Reeffish has different adult markings and more rounded tail tips. A clear side photograph that includes both the pectoral origin and the rear dorsal base is especially useful. Either mark may be hidden briefly by fin movement or viewing angle.
Observe without disturbing
Give a feeding school a clear route back toward the reef and avoid surrounding it with photographers. Never throw food into the water or attempt to hold an individual in position. Keep your attention on buoyancy, current and buddy contact as well as the fish. If the diagnostic marks remain hidden, retain a tentative label rather than inventing certainty from a brown silhouette.
Harvest, protection and eating safety
Restricted marine life: live collection only; no spearing
Can it be hunted or harvested?
Brown Chromis 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
- FWC: Recreational Marine Life
- Florida Administrative Code: current Marine Life chapter 68B-42
- FWC: Saltwater Recreational Licenses
- NOAA: Florida Keys Sanctuary Regulations
- FWC: Spearing
- Florida Department of Health: Eating Healthy Seafood
- Florida Department of Health: Seafood Poisoning
- FDA/EPA: Advice about Eating Fish
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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