Fish
of La Saladita.

Stingrays

Three stingray species confirmed in the 50 km study area. The bullseye round ray (Urobatis concentricus) is the most frequently documented, with 9 iNaturalist research-grade records in the area. Stingrays rest on the sandy bottom in shallow water — the exact zone where surfers walk in and out. The venom spine is on the tail: a ray that feels the pressure of your foot will whip upward.

Shuffle step. Drag your feet instead of lifting and setting them. This disturbs rays before you step on them, giving them time to move. Standard practice at every sandy-bottom point break in Pacific Mexico.

If stung: soak in the hottest water you can tolerate (hot water denatures the protein-based venom). Seek medical care for spine removal if embedded. Not life-threatening to healthy adults, but acutely painful.

Houndfish / Needlefish

The largest needlefish in the Eastern Pacific — up to 1.5 m, mostly beak. Seen at the surface on glassy early mornings, hovering in the lineup or cruising the shorebreak. Feeds on small fish, not people. Startled by light (including night surfing with lights) it will leap and can impale; this is rare but documented globally. Daytime encounters are benign — they move away from surfers.

One was observed cruising alongside surfers at Saladita on June 13, 2026 — a glassy, small-wave morning, exactly their preferred feeding window. Range-confirmed for this coast; not yet a formal iNaturalist record for the study area.

Common names: marao, agujón, pez aguja. No records in the 50 km iNat dataset as of this build. If you photograph one here, upload it to iNaturalist — it would be the first local record.

Pacific Eagle Ray

The most frequently documented elasmobranch in the study area, with 10 iNaturalist research-grade records. Unmistakable in the water: wide diamond-shaped wingspan, long whip tail, distinct white spots on dark dorsal surface. Often seen gliding in pairs or small groups through the surf zone and along the rocky point. Feeds on mollusks and crustaceans on the sandy bottom.

Eagle rays do have a venomous tail spine but are not aggressive. Encounters from the lineup are common during certain swells when they follow baitfish into the break.

IUCN status: Vulnerable (global). Also known as Pacific spotted eagle ray. Previously classified as Aetobatus narinari (Atlantic/Indo-Pacific); the Eastern Pacific population is now A. laticeps.

Yellow-bellied Sea Snake

The only true sea snake in the Eastern Pacific and the most widespread snake on earth. Unmistakable: black above, bright yellow below, with a flattened paddle tail. Lives its whole life at sea, drifting at the surface where currents converge — occasionally washed inshore or onto the beach after storms. 13 iNat records in the study area.

Venomous, but not aggressive. Its venom is potent, but the mouth is small and rear-set and bites on swimmers are exceptionally rare — it does not chase or strike defensively in open water. The real risk is on the sand: a beached snake is still alive and can bite if picked up or stepped on. Never handle one, even a stranded or seemingly dead individual.

If bitten: keep the limb still, apply a pressure-immobilization bandage, and get to a hospital immediately — this is a medical emergency. Antivenom for sea-snake envenomation is not always stocked locally, so evacuation matters. Bites are rare; leaving the animal alone essentially eliminates the risk.

Bull Shark

The one shark worth knowing about here. Bull sharks tolerate fresh and brackish water and push into river mouths and estuaries — including the Río Petatlán lagoon mouth — which is what brings them into the same nearshore, murky water that surfers and swimmers use. Stocky, blunt-snouted, and highly adaptable. Documented in the study area but rarely seen; encounters are uncommon.

The risk is low but not zero, and it is situational. Bull sharks feed most actively at dawn and dusk in turbid water, especially near river outflow after rain when runoff carries bait and lowers visibility. Those are the conditions to avoid — not the fish in general.

Practical steps: avoid dawn/dusk sessions in murky water near the lagoon mouth, especially after heavy rain; don't surf near fishing activity or bait; remove shiny jewelry. Shark incidents on this stretch of coast are not a documented pattern — this is standard caution, not a warning of frequent encounters.

Whale Shark (harmless)

The largest fish in the ocean — a filter-feeding gentle giant that passes seasonally through offshore waters off this coast. Spotted-blue, slow, and utterly harmless: no threat to swimmers, no teeth to fear. Documented twice in the study area. If you get one, it is the encounter of the trip.

IUCN Endangered. Under Mexican regulations, keep a respectful distance, do not touch, and never block its path — passive observation only. Report sightings to iNaturalist; each one helps map their movement along the Guerrero coast.

Stone Scorpionfish

The one genuinely dangerous fish on the Saladita rocks — the "rock fish" everyone means when they warn you. A master of camouflage, it sits motionless on rock and rubble at the headland, mottled brown and impossible to see until it moves. It does not flee; it holds position and relies on being stepped on or grabbed. The 12 dorsal spines, plus anal and pelvic spines, each deliver venom through a groove.

The risk is the rocks, not the water column. Stings happen to people walking or scrambling barefoot on the headland reef, reaching into crevices, or handling one caught in a net or on a line. Watch where you put hands and bare feet on the rocks; wear reef booties on the point. It will not chase or approach you.

If stung: soak the wound in the hottest water you can tolerate (about 45°C) for 30–90 minutes — the venom is protein-based and heat denatures it. Remove any spine fragments. Pain is intense; swelling can spread up the limb. Seek medical care — especially for stings to the hand, for children, or if systemic symptoms appear. Rarely life-threatening to healthy adults but far more painful than a stingray. Local names: rascacio, pez escorpión, lapón.

Pacific Man-of-War (Bluebottle)

Not a fish — a colonial siphonophore that acts like a jellyfish. The Pacific bluebottle is smaller than the Atlantic Portuguese man-of-war, with a single long blue tentacle (rather than many) trailing up to 10 m below the float. Blown onshore by light winds; when they appear, they often appear in numbers. Observed floating in the lineup at Saladita on June 13, 2026.

The sting is sharp and immediate — a burning welt that can last hours. Tentacle fragments on the beach remain potent after the animal is dead.

Treatment: Remove visible tentacle fragments with a card or stick (not bare fingers). Rinse with seawater or saline — not freshwater (freshwater triggers discharge of unfired nematocysts). Apply heat — hot water or a hot pack (45°C) for 20 minutes; heat denatures the venom proteins. Ice provides some pain relief but does not neutralize venom. Antihistamines help secondary itching. Seek care if sting covers a large area, involves the face, or causes systemic symptoms.