Fish often dubbed the ugliest in Britain, have delighted staff at a aquarium in Cornwall by producing thousands of eggs.
The wolf fish form part of a predators' display at the aquarium
It was hoped the two wolf fish, which went on display at Newquay's Blue Reef Aquarium in February, would breed.
But because they are difficult to sex, staff could not be certain they were male and female until the eggs arrived.
The fish are a dull grey colour and have long, sharp front teeth, designed to crush shellfish.
They are not normally considered dangerous to humans, despite their appearance and are capable of living for 20 years.
Weighing in at up to 20kg (44lbs), wolf fish can reach lengths in excess of 150cm (59ins).
The two fish form part of the the Cornish aquarium's predators' display, which also includes jellyfish, octopus and stonefish.