Perhaps around 50-60mm long. In a rock pool.
No interactions present.
To help improve my skills can you exapnd a little bit on the features that led you to this conclusion?
A similar fish I found a few years ago I identified as a Blenny - no agreements with that one. http://www.ispot.org.uk/node/75348
Yeah David I would say your other one is without doubt Common Blenny, its almost a carbon copy of this one. It looks a bit younger and smaller but identically marked young blenny.
If you would like to add the ID I would gladly agree it.
I suspect I don't spend enough time in coastal locations to ever be confident with these.
I would recommend using a kids net to catch and closely inspect rockpool fish in the hand anytime you do go rockpooling. If the pools you are looking in are anything like the ones I visit, it becomes a matter of trying to find small fish which arent common blenny. You wont be long familiarising yourself with the vagaries of common blenny colouration if you keep catching them and observing them at rest in shallow water.
Its simply the colouration, markings and shape. This one looks very typical for a common blenny of about 4/5cm. They tend to lose a lot of the whitest markings as they get bigger. Can become very dark and monochrome or can remain quite mottled, criptically coloured. I dont know if gender has a bearing on colouration.
They are by far the commonest rockpool fish I see and those images cant be confused with any other species I know or am personally familiar with. This probably isnt giving you the answer you would like, tbc.....
To be honest sometimes "because it just looks like one" is the best answer to this sort of question.
2nd image is the important one. The birds eye view ones could be slightly indeterminate, if that makes sense.
The 2nd pic shows enough of the profile to see the long tapering shape, blunt face and very typical row of white marking on the flank. Having said that, they dont all possess such markings even as immature ones. I had blennies in my hand today which were 3cm long and virtually monochrome slate grey(discoverd beneath rocks). Environment probably has a bearing on colouration as with most rockpool fish.
I would suggest that the lightness of the fish might be related to whether it is out in the open, how sunny it is etc.
They often show a circular marking directly behind the eye on the gill plate, your fish is a good example.
I'd like to hear your thoughts on this moth please?
Lat/Lng: 54.490226, -0.588196
OS grid ref: NZ915114