The 10-inch-long angelfish was laid out on an operating table while a vet and two assistants carried out the unusual surgery.
After being anaesthatised the exotic fish had a tube placed in her mouth and water pumped through her body and out her gills to enable her to breathe.
Vet Sue Thornton repaired the stomach condition using a scalpel, a needle and forceps during the £500 operation.
After being stitched up and brought round the plucky fish was kept under close observation before she went on to make a full recovery.
Carla has been a resident at the London Aquarium for 10 years and staff decided to try and save her rather than put her to sleep when she developed the hernia. Telegraph
Carla the angelfish is NOT a Dead Fish!