King mackerel

Bluish-green back fading to silvery sides and belly, no body spots in adults, no dark blotch on the front of the first dorsal fin, and a lateral line that drops sharply below the second dorsal fin.

Elongate mackerel with a sharply dropping lateral line; juveniles may show yellowish spots.

Most are around 28 in (70 cm).

Up to about 6 ft (184 cm) long and 99 lb (45 kg). Source: FishBase

The king mackerel feeds mainly on fish, with smaller amounts of shrimp and squid.

It is often found around outer reefs, and large schools migrate long distances along the coast when the water is warm enough. It may carry ciguatera in some areas.

Found in Puerto Rico. Start in the documented habitat and substrate for this species, then narrow the search using depth, current, structure and food activity. Habitat reference:

Coastal to offshore waters, often around piers, with occasional occurrence in deep water.

From 16 ft to 459 ft deep (5–140 m), usually 16 ft–49 ft (5–15 m).

Start near the surface and upper water column around bait, weed lines, current edges or floating structure; work deeper only when marks or bait show deeper.

Water: marine. Habitat: reef.

Fish when local reports show bait and pelagic activity; in Puerto Rico these fisheries can be productive in multiple seasons rather than one universal peak.

Dawn through mid-morning and late afternoon are common starting windows, but active bait and current can produce throughout the day.

Offshore current edges, rips and convergences usually matter more than the tide table alone; fish the side holding bait.

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

Live blue runners, goggle-eyes, menhaden and threadfin herring; frozen cigar minnows.

Spoons, diving plugs and duster-rigged baits.

FWC documents 20-pound tackle, or heavier for larger fish, as regional guidance rather than a universal setup.

A practical starting range is roughly 5/0–9/0 for natural bait, scaled to bait size and the target; use strong, non-stainless hooks when release is likely.

FWC documents 20-pound line, or heavier for larger fish, as regional guidance.

Wire or monofilament leader is documented; material choice, strength and length are not universally established.

Slow-troll live baits on a wire stinger rig over reefs, wrecks and along beaches.

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

King mackerel has documented food use in the BigJoe catalog/source set. Freshness matters — keep it on ice, and watch for any toxin or mercury advisory.

People do eat this species. We don't have taste or table-quality notes yet.

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. FOOD ADVISORY — FDA/EPA lists this fish type among the highest-mercury choices to avoid for people who are or may become pregnant, breastfeeding, and young children. FOOD STORAGE HAZARD — if this fish is not promptly and properly chilled after catch, histamine/scombrotoxin can form. Cooking, freezing or smoking does not reliably destroy the toxin once formed. 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. FOOD ADVISORY — FDA/EPA lists this fish type among the highest-mercury choices to avoid for people who are or may become pregnant, breastfeeding, and young children. FOOD STORAGE HAZARD — if this fish is not promptly and properly chilled after catch, histamine/scombrotoxin can form. Cooking, freezing or smoking does not reliably destroy the toxin once formed.

Rules: King mackerel — Puerto Rico minimum size: 20 in fork length minimum. 20 in fork length minimum. Verify current DRNA orders before fishing.

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