Newquay's Blue Reef Aquarium will celebrate fishy top of the pops
Coyly the seahorse bows his head as he gently bobs through the water while his neighbour the clownfish protects a new batch of eggs among the anemones.
Famed as the aquatic world's best dads, they will this weekend will share a special Father's Day event.
Staff at Newquay's Blue Reef Aquarium will pay tribute to the pair on Sunday with talks and tours throughout the day.
Jenni Collins, who works at the popular visitor attraction, said: "We always celebrate Mother's Day so we thought it was only fair that fishy fathers should also get some recognition.
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"In some cases it's the males that actually do most of the hard work when it comes to looking after the babies
"Our clownfish recently produced eggs and the dad is doing a sterling job of tending to them."
Clownfish lay their eggs among the tentacles of stinging anemones for protection.
The attentive males carefully fan the eggs using their fins and will often manoeuvre the anemone's tentacles to provide a protective canopy above the developing fish.
They are so protective that they have even been known to attack divers who venture too close to their young.
It is a similar story with fathers-to-be among the sea-going corkwing wrasse family who also do all the nest-building in readiness for the big day.
However, the fish world's most famous fathers are undoubtedly members of the seahorse, and closely related pipefish, families.
They are virtually unique in the animal kingdom in that it is the male rather than the female which carries the babies and gives birth to them via a special brood pouch on their stomach.