rocklings

Hi a quick question..
Whats the difference between a shore rockling and the 3 beard or 5 beard one???
Thanks in advance.

shore and three bearded each have 3 beards but the real 3 bearded is much bigger with kind of orange in colour with quite large spots where the shore rockling has more variation in colours lacking the large spots.
5 bearded is much smaller with as his name suggests 5 beards/ barbules

thanks john that is clear enough...