Grand requin marteau vs Oscar

Sphyrna mokarran comparé à Astronotus ocellatus

Taxonomy & Classification

Attribut	Grand requin marteau	Oscar
Nom scientifique	Sphyrna mokarran	Astronotus ocellatus
Ordre	Carcharhiniformes	Cichliformes
Famille	Sphyrnidae	Cichlidae
Conservation Status	Critically Endangered	Least Concern

Physical Traits

Attribut	Grand requin marteau	Oscar
Longueur maximale	610,0 cm	45,0 cm
Poids maximum	580,0 kg	1,6 kg
Couleur	Brownish-gray to olive-gray dorsal surface with a clean countershaded white belly; no distinct patterning; first dorsal fin is tall and strongly falcate; pelvic fin tips dusky.	Dark olive-brown to blackish body with irregular wavy orange-red markings forming a marbled or reticulated pattern; prominent black ocellus with orange ring at the upper tail base.

Habitat & Environment

Attribut	Grand requin marteau	Oscar
Type d'eau	Saltwater	Freshwater
Plage de profondeur	1-300m	—
Aire de répartition	Circumtropical in warm coastal and offshore waters of the Atlantic, Indian, and Pacific oceans. Concentrates around coral reefs, continental shelf edges, and deep-water drop-offs; population …	Native to the Amazon and Orinoco river basins in South America, including Peru, Colombia, and Brazil. Inhabits slow, deep, turbid rivers, flooded forests, and large …
Habitat	Neritic	Slow-moving rivers and floodplains of the Amazon and Orinoco basins, South America. Warm, murky water (22-28°C, pH 6-8). Inhabits areas with submerged logs and dense …

Aquarium Suitability

Attribut	Grand requin marteau	Oscar
Taille minimale de l'aquarium	—	280 L
Température	—	22-25
Plage de pH	—	6.0-8.0
Niveau d'entretien	—	Moderate
Tempérament	—	Aggressive

Informations sur la pêche

Attribut	Grand requin marteau	Oscar
Poisson de pêche sportive	Non	Oui
Cote de combativité	—	—
Record du monde	—	—
Teneur en mercure	—	—

Cuisine & Edibility

Grand requin marteau

Critically Endangered — consumption strongly discouraged. Fins are historically traded but the species faces severe population decline; eating this fish is ecologically irresponsible.

Oscar

Not consumed — popular ornamental cichlid kept for its bold patterning and personality; occasionally eaten in parts of South America but primarily an aquarium species.

Species Overview

Grand requin marteau

The great hammerhead is the largest of the nine hammerhead shark species. Its distinctive cephalofoil (hammer-shaped head) houses an array of electroreceptors that allow it to detect stingrays buried beneath the sand.

Oscar

The oscar is a large, intelligent cichlid native to the Amazon basin. Known for its dog-like personality, it can recognize its owner and may beg for food. Oscars rearrange their tank decor and require spacious aquariums with robust filtration.