Kelpfish is a Legends of Idleon monster: 10 drops, found in 1 area.

Kelpfish | Idleon Toolbox

Kelpfish

Coins

Kelpfish_Card

Prehistoric_Battlehair

This statue right here will boost your Spelunking EXP gain!

Spelunky_Statue

I think this statue will give you more Daily Coral for the Coral Reef!

Reef_Coral_Statue

Increases Spelunking EXP gain by 1%. Golden foods are never consumed.

Golden_Saltwater_Taffy

Represents a single subscriber on the Corporatube Video Platform. It You'sed to be called something else, but no one around here remembers.

Corporatube_Sub

Represents a single follower on Cloudsound. This isn't a website, it's literally a giant cloud that emits sound that people enjoy following around. Why, what were YOU thinking this was?

Cloudsound_Follower

Luckiest_Lad

Kelpfish as you know them are actually female... as for the male fish, well, you're looking at a group of them. Confused? Look up male anglerfish...