Common sawfish vs コウテイペンギン

Pristis pristis compared with Aptenodytes forsteri

Key Differences

• Common sawfish is Critically Endangered while コウテイペンギン is Near Threatened.

Taxonomic Classification

Rank	Common sawfish	コウテイペンギン
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Elasmobranchii	Aves (鳥類)
Order	Rhinopristiformes (ノコギリエイ目)	Sphenisciformes (Penguins)
Family	Pristidae	Spheniscidae (Penguins)
Genus	Pristis	Aptenodytes (Great Penguins)
Species	Pristis pristis	Aptenodytes forsteri

Evolutionary Relationship

Common sawfish and コウテイペンギン share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common sawfish

CR — Critically Endangered

コウテイペンギン

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Physical Characteristics

Attribute	Common sawfish	コウテイペンギン
Diet	—	Carnivore
Average Lifespan	—	20 years
Average Length	—	1.1 m
Average Weight	—	40.0 kg

Habitat & Geographic Range

Common sawfish

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

コウテイペンギン

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common sawfish

<em>Pristis pristis</em>, the largetooth sawfish or common sawfish, is a large elasmobranch fish in the family Pristidae, once widespread across tropical and subtropical coastal and freshwater habitats in the Americas, Africa, Asia, and Australia. The species is now documented primarily in remnant populations, including in Colombia and Venezuela. Characterized by its distinctive elongated rostrum lined with paired rostral teeth resembling a saw, the largetooth sawfish typically inhabits shallow coastal waters, estuaries, mangroves, and freshwater rivers and lakes, using its rostrum to detect and stun prey. It is a generalist predator, feeding primarily on fish and crustaceans. The species can reach lengths of up to 7 meters, making it one of the largest of all elasmobranch fishes. <em>Pristis pristis</em> is assessed as Critically Endangered on the IUCN Red List, having experienced catastrophic population declines of over 90% across most of its historical range. Primary threats include overfishing and bycatch, habitat loss through coastal development and river modification, and the international trade in rostral teeth. The species has been extirpated from numerous countries and regions where it was once common. International conservation efforts including fishing bans and habitat protection are underway to prevent further decline and facilitate recovery.

コウテイペンギン

世界最大のペンギンであるコウテイペンギン（Aptenodytes forsteri）は体高最大1.2m、体重45kgで、地球上で最も過酷な環境の一つである南極大陸に生息しています。零下60°C以下の真冬の暗闇の中で繁殖し、雌が海上にいる間、雄が65日間足の上で育雛嚢の下に一つの卵を温め続けます。数千羽からなる群れで個体が暖かい中心部を循環するいわゆるハドリング行動は、協調的な生存戦略の傑作です。