American Brook Lamprey vs koala

Lethenteron appendix compared with Phascolarctos cinereus

Key Differences

American Brook Lamprey is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	American Brook Lamprey	koala
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Petromyzonti (Petromyzonti)	Mammalia (mamíferos)
Order	Petromyzontiformes (Hyperoartia)	Diprotodontia (Marsupials)
Family	Petromyzontidae	Phascolarctidae (Koalas)
Genus	Lethenteron	Phascolarctos (Koalas)
Species	Lethenteron appendix	Phascolarctos cinereus

Evolutionary Relationship

American Brook Lamprey and koala share a common ancestor at the Phylum level: Chordata. (cordados)

Vista Phylum: Chordata

Conservation Status

American Brook Lamprey

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	American Brook Lamprey	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

American Brook Lamprey

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

American Brook Lamprey

The American Brook Lamprey (Lethenteron appendix) is a species in the genus Lethenteron. It is currently classified as Least Concern on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

koala

Icónico marsupial del este y sureste de Australia, los koalas pesan hasta 15 kg y pasan hasta 22 horas diarias durmiendo para conservar energía de su dieta de hojas de eucalipto, baja en calorías. Altamente especializados para procesar los compuestos tóxicos del eucalipto que matarían a la mayoría de los demás mamíferos, poseen microbiomas intestinales únicamente adaptados para la desintoxicación. Clasificado como En Peligro en 2022, con poblaciones diezmadas por la enfermedad de clamidia, la deforestación y el cambio climático.