There are 1,000 shrimp in the tank. The shrimp eat Spirulina and is algae. They are from the Big Island. I'm going to take 6 Opae`ula home. How do they catch it when its so small? Are Opae`ula native to Hawaii? There are 4 big shrimp in the tank to. How did the Opea`ula make it to Hawaii?