Jesse Owens' courageous achievement. A look back at the amazing feats of Jesse owens, winning four gold medals in Berlin in 1936 and defying the hatred of Hitler at the same time. Share this.
Report Abuse. Blue, due to the hemocyanin. Crayfish and many other organisms use copper to carry oxygen instead of iron like humans, so their blood is blue. http://www.hostourcoast.com/photos/posts...There's a picture of horseshoe crab blood, which is very similar to crayfish blood.ating Newest Oldest. Best Answer: Many lower animals carry oxygen in their blood stream by means of a dissolved substance called hemocyanin ,this pigment is blue in color. So crayfish has blue blood like lobster, crab, scorpion, octopus, squid, clam and mussel.
Hi there, my crayfish just had babies a few weeks ago, and now they are about an inch long. She was in my big 60gal tank so I moved her to a small 10 gal hex tank so she wouldn't be bothered and I could keep her water extra clean. After the eggs hatch the babies will cling to her for a while, probably a week or two. really need help. I have a small 10 gallon tank with 5 crayfish. One of them got pregnant recently for the second time, with the first time being a failure. It has black eggs right now but just half of its tail is filled. 3 of my crayfish are male and 2 are female.