Thanks to both of you.
Tom, I cannot send PM yet since I'm new in the forum, but I could read yours.
I only need samples for one person. Or better, I need 40-50 samples. If one person alone can do that, perfect! If not, I could receive samples from two persons, as long as the fish are captured no very far ones from the others (let's say no more than 10-20 km).
I need a small piece of caudal fin, that you can cut with a scissors. This is called a "fin clip". The size of the sample it's approximately half the size of a finger nail. You don't need to be worried about that. With this sample size I can analyse DNA up to 10 times.
As for the photos, place the fish with the left side up, make sure there is enough light, and just take the photo. If you place a meter in the photo ,then I can have a measurement of the total length of the specimen, which is interesting.
Since my works it's related to the different colorations of the ballan wrasse, I'd ideally need 20-25 samples of each one of these colorations:
http://www.farodevigo.es/mar/2013/05/23 ... 15475.htmlIn Spain it's very clear, ones are spotted and the other are not (they are plain coloured, although they can be reddish, greenish or brownish). Sometimes there are middle colorations (plain individuals with some spots in the fins), but since I'll have the photos, you can collect a sample too. Important: please label the tubes with the samples and the photos in the same way so then I can match samples and colorations! And just if you can, make sure the fins are extended when you take the photo so I can see if there are spots on them or not

Once you have the sample, you can keep it in the freezer at home (-24 degrees I guess) until you can send them.
If you are keen to collaborate, please contact me at
chirleu@gmail.com and I'll give you the address where the samples should be sent.
MANY THANKS for your interest!! Please ask me anything you want before start collecting the samples.