Old-fashioned fish regrow fins

Old-fashioned fish regrow fins

Fish from an ancient line can regenerate lost limbs with newt-like flair

By Susan Milius, 13:25 PM February 22, 2012

The discovery that a long, skinny fish can regrow its fin in a matter of weeks suggests that ancient vertebrates had considerable regenerative powers.

Two species of bichir from Africa can regrow amputated bony fins with remarkable accuracy, says developmental biologist Luis Covarrubias of the National Autonomous University of Mexico in Cuernavaca. Among the most ancient of the living lineages of ray-finned fishes, a group that includes most fresh- and saltwater species, the Polypterus bich...

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