>> Should this be a fish I need to consider getting
No.
>> and if so, what are the benefits of having one in your tank?
More stress, a difficult fish to keep, having to maintain a suitable population of life food.
The name "blenny" is very deceiving for this fish. It's actually part of the Dragonet family and is a very difficult fish to keep. Doing some research on the "mandarin dragonet" will give you an idea of the requirements for this fish.
In a nutshell, a general guide is
- 75lb of Live Rock, or a suitable sized refugium
- An established tank of 12mnths age+
- An abundent supply of copepods for it to eat.
These fish live off live food, and will seldom take prepared foods. If feeding on prepared foods, they will still require an established tank with live foods as the primary source of nutrients.
Hope this helps
