Alequim vs Commander skate

Carcharodon carcharias compared with Bathyraja lindbergi

Key Differences

• Alequim is Vulnerable while Commander skate is Least Concern.

Taxonomic Classification

Rank	Alequim	Commander skate
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Lamniformes (Mackerel Sharks)	Rajiformes (Rajiformes)
Family	Lamnidae (Mackerel Sharks)	Arhynchobatidae
Genus	Carcharodon (Great White Sharks)	Bathyraja
Species	Carcharodon carcharias	Bathyraja lindbergi

Evolutionary Relationship

Alequim and Commander skate share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Alequim

VU — Vulnerable

Population: ~3.5K

Trend: Decreasing ↓

Commander skate

LC — Least Concern

Physical Characteristics

Attribute	Alequim	Commander skate
Diet	Carnivore	—
Average Lifespan	70 years	—
Average Length	5.0 m	—
Average Weight	1.1 t	—

Habitat & Geographic Range

Alequim

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate grasslands and steppes, among 9 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Chile, Norway, Portugal, and Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Commander skate

Alequim

O tubarão-branco é o maior peixe predador da Terra, podendo atingir 6 metros de comprimento e 2.000 kg, habitando águas costeiras e oceânicas frias em todos os principais oceanos. São predadores de topo que empregam ataques de emboscada por baixo, direcionados principalmente a mamíferos marinhos, peixes de grande porte e aves marinhas. Apesar de sua terrível reputação, ataques não provocados a humanos são extremamente raros. Classificado como Vulnerável (VU), com populações em declínio devido ao corte de barbatanas, captura acidental e pesca direcionada, apesar das proteções legais vigentes em muitas jurisdições.

Commander skate

<em>Bathyraja lindbergi</em>, commonly known as the Commander Skate, is a cartilaginous fish belonging to the family Arhynchobatidae. This species is assessed as Least Concern on the IUCN Red List. As a member of the genus Bathyraja, the Commander Skate is a deep-water elasmobranch that typically inhabits the cold, benthic environments of the North Pacific Ocean, often found at considerable depths along continental shelves and slopes. Like other skates, it typically has a flattened, disc-shaped body well adapted for life on or near the seafloor, where it forages for bottom-dwelling prey including small fish, crustaceans, and invertebrates. Reproduction in Bathyraja skates generally involves oviparous egg-laying, with females depositing eggs enclosed in protective cases. The species is occasionally encountered as bycatch in commercial fisheries operating in its range. Biological traits of this species remain poorly documented in the scientific literature.