As of the latest patch they collect pearls when you bite them.

Be really care when knocking these things out from a distance! Unfortunately they don't look knocked out when they are so continuing to shoot darts at them can be an easy an unfortunate mistake to make.

- Main use for this tame is using the Angler as a "lure" for other anglers kill anglers for their gel. The gel is the longest burning fuel in the game at approx. 6 minutes per 1 gel
- secondly use is a light source underwater

P. E. A. R. L. S. That's all you need to know about this amazing creature.

They are usually aggressive, but once hurt, they will become skittish and try swim away from you.

Can be used to pick up 60ish pearls instead of 6 or so by hand. Awesome tame now since the update added this.

Make it stronger and more health

Angler fish have the bright antenna, so look out for that whe. Trying to locate one.

The dilophosaurus of the seas...

The tek cave update gave the anglers the ability to gather pears, according to the wiki

If you build a base on the rock island in the lake in aberration or the big lake near the surface entrance breed an army of fully mutated anglers, mantas, and eels and set them on wander and aggressive and your lakes will be karkinos and spino free

- Main use is after tamed they will attract more anglers which can be harvest for gel
- Secondary use would be a mobile underwater tame that also has a built in light
- Lastly they can be harvested for gel which tames Manta's

(Angeler gel is the longest burning fuel source at 6 min per gel)

Very useful for exploring underwater caves

There tend to be quite a lot of angler spawns in North zone near Carno Island

Anglers are found in the deeper parts of the ocean, finding them is as one would guess easy as their lures are easy to see at a distance, they are comparatively easy to kill for gel ( taming food for Mantas and the best fuel in game ) but in groups exceeding three then I suggest running, best take a megaladon.
Also can be lured by other tamed anglers lures.

They get a lot of silica pearls when you attack the shells with it.

It's a good idea to trap them if you can then they can't swim away, making the taming process alot easier.

The terror birds of the sea the are extremely annoying just like the terror birds on land

Since update these bad boys are amazing for pearls chomp and run. Suggest. Speed and damage

Need a lot of pearls ? ... Then you really want a lightbulb fishy :)