Saltwater · Year-round in estuaries and river mouths; strongest in the warm rainy season from May to October when rivers run and bait concentrates at the mouths.
Black Snook
Centropomus nigrescens
The largest Pacific snook, a powerful mangrove and river-mouth ambush predator prized across Mexico and Central America. On the Pacific it is called robalo prieto, but on Mexico's Gulf coast robalo prieto is a different fish, the Mexican snook (Centropomus poeyi).
Seasons · Peak
Identifying features
- Very dark, almost black lateral line extending onto the caudal fin
- Charcoal-grey fins and a blue-grey back over a white belly
- Deep, round-bodied profile — thicker through the middle than white snook
- Fourth dorsal spine taller than the third, unlike white snook
- Large mouth with a strongly protruding lower jaw and a concave snout profile
Habits
- Ambushes baitfish and shrimp from mangrove roots, snags and current seams
- Feeds most actively at dawn, dusk and on moving tides
- Adults move between estuaries, surf river mouths and lower rivers with the rains
- Protandric — smaller fish are male, the largest are female
Distribution
Where to find them
- Mangrove channels and root lines in large esteros
- River mouths and surf bars after rain
- Deep holes and snags in lower river reaches
- Bridge and dock pilings in estuary mouths
Where they live
How to catch them
Mangrove casting Boat
Rig: Soft-plastic swimbait or jerkbait on a jig head
Bait/lure: Live shrimp or small mullet can be pitched to the same cover
Key tip: Cast tight to root lines and snags on a moving tide and retrieve slowly; expect the strike on the first metres.
River-mouth surf casting Shore
Rig: Long swimming plug or popper
Bait/lure: Heavy spoon in low light
Key tip: Work the bar and current seams at first light after rain, when snook gather to feed on bait washed out of the river.
Live-bait drifting Boat
Rig: Free-lined live mullet on a circle hook
Bait/lure: Live sardina near structure
Key tip: Drift bait along deep mangrove edges and hole edges; keep the drag ready for a fast run into cover.
Best baits & lures
Baseline setup
- Rod: Medium-heavy 7 ft spinning or baitcasting rod
- Line: 30–40 lb braided main line
- Terminal: 40–60 lb fluorocarbon leader, 4/0–6/0 circle or J hooks
Recommended gear for this species
Rod · Best value
9' medium-heavy surf spinning rod
≈ US$110-170
Casts plugs and bait past the breakers and handles stripers, drum and bluefish in the wash.
Reel · Best value
5000 size sealed spinning reel
≈ US$120-180
Salt spray and dunkings kill cheap reels — a sealed body and 30 lb braid capacity are the surf standard.
Terminal · Budget
Topwater plugs, soft-plastic jigs and fish-finder rigs
≈ US$25-40
Plugs for blitzes, jigs for the trough, bait on a fish-finder rig when they won't chase — the inshore trio.
Picks are never paid placements. Prices are guides; price links are coming soon and none is an affiliate link yet.
Typical size
To about 123 cm and 26 kg; most angler fish run 2–8 kg, with true giants over 15 kg.
On the table
Excellent — firm white flesh, one of the most valued food fishes on Mexico's Pacific coast.
Similar species
White SnookWhite snook is paler with a less bold lateral line and its third dorsal spine is the tallest; black snook is darker, deeper-bodied and its fourth spine is tallest.
Mexican SnookMexican snook is an Atlantic/Gulf species that never occurs on the Pacific; it shares the Spanish name robalo prieto but has 15–18 gill rakers and a different range.Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →
Plan a trip for Black Snook
Build today's plan⚠ Heads-up: Black Snook doesn't occur around Vancouver, BC (or is very rare there), so it's not a sensible local target. Your plan stays in Vancouver, BC and is built around the fish that actually live there.