Tainha-superficial
Mugil trichodon — called tainha-superficial by fishers in northern Brazil — is a small mullet of coastal shallows, estuaries, and brackish lagoons.
While the larger mullet species (especially Mugil liza) dominate the famous seasonal fisheries of Santa Catarina and Rio Grande do Sul, M.
trichodon is part of the broader tainha complex harvested by artisanal communities from the Amazon estuary south through the northeast coast. It rarely exceeds 30 cm and is primarily a bycatch or subsistence species rather than a dedicated target.
Scientific Name: Mugil trichodon
Also known as tainha-superficial, tainha chata, fantail mullet
- Olive-green to bluish-grey on the back, fading to pale below; a dark bluish spot marks the base of each pectoral fin — a useful field mark.
- Body cylindrical and slightly compressed toward the front; head notably deeper than wide at the gill cover; top of head distinctly flat.
- Mouth small and positioned at the front of the snout; lower lip carries a small central knob; fatty tissue covers most of the eye.
- Typically 15–20 cm in hand; recorded to 46 cm but rarely seen that large — most fish caught in Brazil run well under 30 cm.
What to know
Habitat Distribution
- Native to the western Atlantic from Florida to northeastern Brazil; in Brazil it is found along the northern and northeastern coast, including the Amazon estuary region around Bragança (PA).
- Lives in inshore marine waters, brackish lagoons, estuaries, and the lower reaches of rivers — occasionally moves into fully fresh water.
- A surface and near-surface species, typically found from the waterline down to about 25 m, but most active in the top of the water column close to shore.
- Shares estuarine habitat with other Mugil species (M. curema, M. rubrioculus) and is often caught alongside them in mixed-mullet hauls.
Key Locations
- Bragança (PA) and the Caeté-Taperaçu Extractive Reserve — northern Brazil's Amazon estuary region, where artisanal fishers regularly identify and harvest M. trichodon alongside other mullet species.
- Northeastern and northern coastal estuaries generally, where the species' native range overlaps with active small-scale mullet fisheries.
Specific Spots
- Shallow estuary mouths and tidal creek entrances, where tidal flow concentrates organic matter and algae — the fish's primary food source.
- Brackish lagoon margins and mangrove edges, where calm, nutrient-rich water supports the algal films and detritus mullet graze on.
- Surface and near-surface water over soft or muddy bottoms in river mouths; mullet often school visibly, dimpling or rolling at the surface.
Tainha-superficial FAQ
Answers from onWater's species guide.
What are the best lures and bait for Tainha-superficial?
Small dough balls, bread paste, or algae-based baits on size 10–14 hooks are the most reliable rod-and-line approach, matching the fish's grazing diet.
When is the best time to fish for Tainha-superficial?
Available year-round in estuaries and coastal lagoons, with no sharply defined season the way the larger migratory mullet have in southern Brazil. Fishing effort in northern Brazil tends to follow local tidal and weather patterns rather than a strict seasonal migration calendar.
How do you catch Tainha-superficial?
Tainha-superficial is not typically targeted by sport anglers in Brazil. Artisanal fishers in the north and northeast intercept it incidentally while netting mixed mullet schools in estuaries and lagoon mouths, using cast nets or beach seines.
What do Tainha-superficial eat?
Feeds mainly on small algae, diatoms, and organic detritus scraped from soft substrates and the water surface, not a predatory fish. This grazing habit means lures rarely work; bait fishing with small pieces of bread, dough, or algae-based baits on tiny hooks is the practical approach.
Where do Tainha-superficial live?
Native to the western Atlantic from Florida to northeastern Brazil; in Brazil it is found along the northern and northeastern coast, including the Amazon estuary region around Bragança (PA).
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