Doctorfish

Doctorfish (Acanthurus chirurgus) — field identification starting point: a fish whose exact fin counts, body proportions and coloration should be confirmed against the approved photo and scientific name.

Most are around 14 in (35 cm).

Up to about 15 in (39 cm) long and 11 lb (5.1 kg). Source: FishBase

The doctorfish feeds on algae and swallows sand while doing so. Young ones also pick dead skin and parasites off green sea turtles.

It lives on shallow reefs and rocky areas in loose groups and is active mainly by day. The spine on each side of its tail can cause painful cuts.

Found in Puerto Rico. Start on reef edges, ledges, rocky bottom, patch reefs and nearby sand/grass transitions; work the side with moving water and bait. Habitat reference:

Habitat: reef, rocky bottom, sand bottom, seagrass and coastal waters.

From 7 ft to 82 ft deep (2–25 m), usually 7 ft–49 ft (2–15 m).

Start near the bottom or reef edge where the species is observed; adjust until bites show the active level.

Water: marine. Habitat: reef, rocky bottom, sand bottom, seagrass and coastal waters.

Fish legal open periods and favorable sea conditions; no single month works for every reef species.

Early/late light and moving water are good starting periods; some reef species feed well through the day or after dark.

Moderate moving water is often productive; excessive current may require more weight or a sheltered edge.

Choose sea state, wind and visibility that let you hold position and handle the fish safely. Avoid treating rough weather as a feeding advantage.

Plant material is part of the natural diet for many members, but BigJoe does not promote targeted harvest where parrotfish/surgeonfish protections or local restrictions may apply.

Small flies/jigs may take some species incidentally, but a targeted lure recommendation is secondary to species identification and local rules.

Start with light/medium spinning gear, 10–15 lb line, 15–25 lb leader and a #2–1/0 hook or small jig.

About #4 to 2/0 is a practical starting range for small/medium reef fish; scale to mouth size and bait.

8–20 lb line is a common light-reef starting range; increase around sharp structure.

12–30 lb abrasion-resistant mono/fluorocarbon is a common start.

Observe/identify first. If legal and intentionally fished, use light tackle and minimal-impact methods; release protected or uncertain species immediately.

Let it go quickly if you're not keeping it.

BigJoe does not classify Doctorfish as a routine food species from the current source set. That is not a claim that it is poisonous; before eating, confirm exact identification, lawful retention, documented local food use and current public-health advisories.

Not a common food fish — most anglers release it.

Safety first: FOOD TOXIN RISK — this fish belongs to a group associated with ciguatera in tropical/Caribbean waters. Risk varies by location, species and fish; the toxin cannot be detected by appearance, taste or smell and cooking does not destroy it. Ice it right away. Use a clean board and sharp knife; scale or skin only when appropriate, remove the viscera or fillet cleanly, trim damaged tissue/bloodline as desired, minimize warm-water exposure, and keep the edible portion cold. If the fish carries venomous spines, dangerous teeth or a toxin advisory, follow the safety warning before cleaning.

For routine cooked preparation, FDA seafood guidance uses 145°F (63°C) as the safe internal-temperature target for fish; flesh should be opaque and separate easily with a fork. Grilling, baking, broiling, steaming or pan-cooking can all work after the fish is positively identified, legally retained and cleared for applicable toxin/mercury advisories.

FOOD TOXIN RISK — this fish belongs to a group associated with ciguatera in tropical/Caribbean waters. Risk varies by location, species and fish; the toxin cannot be detected by appearance, taste or smell and cooking does not destroy it.

No species-specific size, bag or season limits are listed here.

Avoid needless kills and follow protected-species, area and season rules.