Like the Jellyfish, a Transparent Fish attack the player all the time regardless if there is blood present, or the time of day.
It is the only predator that has a ranged attack: it will charge at you but instead of biting it will send an electric charge. Use a speargun and do not wait until the last moment to shoot at him.
Once killed it will produced 1 Jelly.
The Jelly cannot be cooked and reduces hunger by 5%.