yes should be fine for a while... I am not sure how long but I have had 8month old stock in my freezer before and its been all good when I have came to use it. I think it would depend on how long its been in the shop freezer too
with regards to the course, how many hours does it involve? I am thinking of doing it next year. I don't really Need to do it because i already have work experience with zoo's and aquariums etc, but I think it will be interesting to do...
try here:
http://www.aquarticles.com/articles/bre ... yfish.html
but to answer your questions quickly
-yes would be fine with kribs
-yes eats off surface
-yes will eat fry
-no it won't only eat live food, but some don't eat flake etc.... will eat frozen bloodworms etc though
-doesnt need huge tank- I would say 3 ft when filly grown- otherwise 2 ft is fine (standard 2x1x1)
then what is it called if you have a salinity 1.010-1.025? It is called brackish.... I have seen people with brackish fish in tanks with a SG of 1.025, I have seen the same fish in a salinity of 1.010 and the same in 1.015... If the Salinity of the tank is high end brackish The clown will do well.
its a silly question isn't it? What constitutes brackish- Not fully marine and not fully freshwater. Many people run Fish only tanks with a specific gravity of 1.021. Is that brackish? It would be a better idea to state the salinity of the water than just saying its "brackish"