how did you shoot this..? what camera are you using..? what background..? because i want to shoot my fishes the same way but never could do it this perfectly.. i have a black background already but i always see some particles from the shot.. thank you! 
shot it using natural light (no flash) i used canon xti/400d with 24-70L usm. black background. the particles you could take out with photoshop. clone mo lang , medyo tiyagaan lang bro but it's worth the time....hope this helps.