Water-guzzling demands of Trump's border wall threaten fish species

Survival of four types of fish and four other species in doubt as government skirts conservation laws to build barrier in Arizona

The survival of eight endangered and threatened species, including four kinds of endemic fish, is in doubt in Arizona, as massive quantities of groundwater are extracted to construct Donald Trump's border wall.

The 30ft-high barrier is under construction on the edge of the San Bernardino national wildlife refuge in south-eastern Arizona, where rare desert springs and crystalline streams provide the only US habitat for the endangered freshwater Rio Yaqui fish.