Cave fish walks up waterfalls

[DavidBrown]

Scientists have discovered a little cave fish from Thailand that can "walk" up waterfalls using a waddle with its fins. They think that this might have been an evolutionary locomotive strategy that early vertebrates used to transition from water to land.

https://www.washingtonpost.com/news...id=hp_hp-cards_hp-card-national:homepage/card

 

[Andrew_NZP]

https://www.youtube.com/watch?v=SguiYeG_O8o

 

[Jurek7]

This fish and its walking was filmed already years ago in the 'Planet Earth' BBC documentary. I remember thinking that, as extremely local and vulnerable (although arguably ugly) species, it would be classic candidate for safeguard aquarium population.

 

[Chlidonias]

the fish itself was described in 1988 and is a species of hillstream loach, which are mostly dwellers of swift-moving water and have large pectoral and pelvic fins used as suction devices to hold onto rocks. I think the footage from Planet Earth was where the authors of this study first noticed the method of "walking".

The paper is here: Tetrapod-like pelvic girdle in a walking cavefish : Scientific Reports