620 messages par Roberto PILLON

20/03/2010 Réponse sur : Fish from Seychelles - Naso sp.?
In this link there are some photos from Seychelles of the same fish:
http://www.mondomarino.net/forum/forum_posts.asp?TID=6001


20/03/2010 Réponse sur : gobie de sable
For the answer: "Hi Roberto, I would like to know which references you use to identify the different fish species".

Usually I use to identify the different fish species by Fishbase, by Louisy, by other books, by my experience in the sea, by forum and e-mail with a lots of my friend sea-biologist. I think that the best "reference" it is to use all these means.
 
For example I wrote that "my photo of Gobius roulei male is identificated by the gobius specialist Robert Patzner". For my photo I used a italian forum and I have the identification by my friend sea-biologists and to be sure to have the best identification I wrote an e-mail to Robert Patzner because I know that it is very hard the Gobius identification and I know that Robert it is a very good specialist.

I know that sometime it is not possible to have a sure identification about a photo. It is not possible for me but it is not possible for other specialist. I write my opinion. I know that to have a sure identification need laboratory test but it is not possible.
When I saw Gobius roulei the first time in Krk I took a lot of photos because I undestand that these fishes are not Gobius niger. I know that it is very similar but it is not the same. I know that it is not a sure identification but I think that it is important to have more opinions and different references.

Best regards,
Roberto Pillon


20/03/2010 Création de sujet : Culcita schmideliana?
I think that these sea star maybe it is Culcita schmideliana but I'm not sure because I don't know the tropical sea life.
Could it is Culcita novaeguineae?
Could it is Halityle regularis?
Thank you


20/03/2010 Création de sujet : Fish from Seychelles - Naso sp.?
In Seychelles there are a lot of these fishes near the seaweeds.
I'm not expert to tropical fishes.
Someone know its?
Thank you.


20/03/2010 Réponse sur : Sole, Pegusa ?
I attach a my photo to explain: "In Solea solea the pectoral fin has a dark spot in the top and it is clear in the lower part."


20/03/2010 Réponse sur : Sole, Pegusa ?
I attach a my photo of Pegusa cf. impar to explain: "In Pegusa impar the pectoral fin has a dark spot before and it is clear in the back."


20/03/2010 Réponse sur : Sole, Pegusa ?
I'm not a very expert abuot Soleidae and I can have a mistake.

But for example the second photo in Fishbase has the pattern of same colour.

Usually I identify the Soleidae about pectoral fin.

(BAUCHOT M. - L., 1987: Lamproies et Myxines, Requins, Raies et autres Batoides, Poisson osseux. In: FISCHER W., BAUCHOT M. L. e SCHNEIDER M. (eds.), 1987: Fiches FAO d'identification des especes pour les besoins de la peche (révision I). Méditerranée et Mer Noire - Zone de peche 37. vol II Vértebrés. FAO, Roma)
In Pegusa lascaris the pectoral fin has a dark spot in the back and it is clear before (I attach a my photo of P. lascaris).
In Pegusa impar the pectoral fin has a dark spot before and it is clear in the back.

In Synapturichthys kleinii the pectoral fin has a dark spot in the lower part and it is clear on the top.
In Solea solea the pectoral fin has a dark spot in the top and it is clear in the lower part.

I know that these are not a sure keys of identification but its are the best keys that I can use with a photo.
It is right or not?


20/03/2010 Réponse sur : Holothuria polii ?
It is Holothuria sanctori.
There is a lot of confusion in the web about Holothuria.
Holothuria forskali it is very different to Holothuria sanctori and this photo it is sure Holothuria sanctori.


20/03/2010 Réponse sur : Sole, Pegusa ?
I think it is Synapturichthys kleinii.
The pectoral fin has the colour of this fish and it is different in Pegusa sp.

My english and my french it is not good, I show you a link:
http://www.webalice.it/colapisci/PescItalia/pisces/Pleuronectiformes/Soleidi/Sogliola%20turca.htm


20/03/2010 Réponse sur : Labre juvénile
I think maybe it is Labrus viridis


20/03/2010 Réponse sur : Holothuria sp ?
It is Holothuria sanctori


20/03/2010 Réponse sur : gobie de sable
If it is length 12 cm it is Gobius niger because Gobius roulei is smaller (max 8 cm).



Nos partenaires