Ivan,
I am not sure what kind of fish you're talking about, but there are many species of Sparidae and Scienidae. Besides, they have different names in the different parts of the Med, of course, and what is worse - even diffrent local names in one country!
I have some of them listed
here . The species are listed with our local name, so the foreigner can get familiar with them but you may recognize the fish on the photo or the drawing. The English and scientific names are also provided.
I am not diving this season. Had an accident and I am waiting for the doctors to tell me if, an if the answer is yes, when will I be able to spearfish again. However I used to hunt most of the time at depths 12-20 meters since the most practiced technique here is the ambush. Can't really sit and wait down there at 30+ m, you know...
However, until the last season I used to do hunting in holes around the 30th m. The big weight you guys talked about is the only weight I used=
You know that the deeper you go, the calmer the fish is. That's the main reason why these guys just drop at 40m and shoot at the fish. First - they know for sure there's a fish there. At 40m, you can't just do the regular search of all holes in the zone, as you will do at 15-20 meters. It is a bit hard to constantly dive at this depth for so many hours. All the teams from the big Euro federations arrive at the site of the big international competitions weeks before the actual event and they research the aquatory very carefully. I wouldn't dive at 40 m if my fishfinder is silent the whole time...
Murat, I can't help you with the alluminum - Sorry, buddy. I saw few pictures on the web now and I didn't notice a guide either. Which is quite strange. And I didn't pay attention to this when I was looking at the models in the store... My Excalibur Carbonium has a guyde.
Ivan