Red Grouper.
Hard-bottom resident. Less drama than blacks, all-day reliable.
How they feed in the Keys
Red grouper are the most common Keys grouper, holding on hard sand and small ledges in 30–120 feet. They're less ambush-driven and more all-day feeders than black grouper — average 4–10 lbs, occasionally 20+. The Gulf-side hard bottom (Florida Bay west toward the Marquesas Sands and the Tortugas Banks) holds the largest concentrations.
68–80°F
Active 60–84°F
Moderate to strong current. Less drama-driven than black grouper.
1–2 knots is plenty. They don't need ripping current to feed.
Pre-front aggression. Calm-to-moderate seas.
Falling pressure increases bite intensity. Stable highs are still productive.
All day. Dawn slightly stronger but they bite through mid-day better than blacks.
Spring spawn April–June. Less aggregation than black grouper.
60+ produces good bites; the species is less coefficient-sensitive than blacks.
Red grouper excavate small pits in hard sand. Side-scan sonar shows them as dark spots — these are red-grouper hotspots and often hold a fish.
12-month outlook
What they eat, what catches them
Cut squid
Whole or large chunks on a 7/0 circle. Tough, stays on through bait stealers.
Cut ballyhoo or sardine
Standard cut-bait reef rig with a knocker setup.
Live pinfish (smaller)
3–5" live pinfish for bigger reds.
- Frozen mullet chunks· Reliable when live bait is unavailable.
- Threadfin herring· Live or fresh-dead — strong scent.
- Standard reef bottom-bait
Squid or cut bait on a 7/0 circle, 60 lb fluoro leader, 8–12 oz weight, knocker rig.
- Trophy red
Live pinfish on a 7/0 circle, fished slightly off the bottom on a fishfinder rig.
How top captains rig it
Spin: 50–65 lb braid. Conventional: 30–50 lb mono.
Spin: 6000–8000 size.
Spin: 7' medium-heavy. Conventional: 6' stand-up class.
60–80 lb fluorocarbon.
- Standard reef
7' medium-heavy spin + 50 lb braid + 60 lb fluoro + 7/0 circle + 8-oz egg sinker + cut bait or squid.
Recreational rules
20" total length minimum (Atlantic).
1 per harvester per day in Atlantic state and federal; counts in 3-fish grouper aggregate.
Atlantic: closed Jan 1 – Apr 30 for harvest. Open May 1 – Dec 31.
Powerheads prohibited in state waters.
Note · Gulf rules differ from Atlantic. Most of the Keys is Atlantic-managed.
What actually moves the bite
Each factor is rated by how much it shifts the bite for this fish in the Keys. Calibrated against the Bite Score weights — see the Bite Score reference for what each factor measures.