Blue Lobsters
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Inside a Crawfish/Lobster


Outside a Lobster/Crawfish

The "crusher claw" is only on a lobster and it is bigger than the "pincher claw". Crawfish don't have a crusher claw. Instead they have 2 pincher claws.

Male lobster fig. 1


(zoom in on fig. 1)


Male lobster fig. 2


How to tell the difference between a male & female lobster/crawfish.

It is important to know if you have a male or female lobster/crawfish. Many people like to have more than one per tank. If you end up with a male and a female you will have 50 to 75 baby crawfish in a little over a month or up to 12,000 baby lobsters in less than a year! Most fish will eat the freshly hatched babies. If they happen to live, the males will fight to the death leaving you with 1 alpha male and many females who will have many more babies of their own. Crawfish/Lobsters reproduce very quickly! If you are not careful, you will have hundreds of crawfish/lobsters before you know it!
Lobsters & crawfish have the same male/female parts. Above I have an example of a male lobster. You will notice 2 smaller "legs" at the base of his tail (they look like legs but they are actually the males "boy parts"). Female lobsters/crawfish do not have those 2 "legs". Instead, they have what looks like a diamond or 2 small dots in the same area as a male has his "legs". An other way to tell the boys from the girls is to look at the width of the tail. Females have wider tails so she can carry her eggs. I choose not to use the tail comparison method because it is much harder to see the difference.

If you would like to learn more about blue crawfish I recommend this website: http://www.bluecrayfish.com. Please don't email me unless it's an emergency. I get so many emails and I have so little time. I will be more than happy to answer all emergency emails or emails to which you can't find an answer any where else. Thanks for your understanding.



Last updated: 3/30/2006 4:05 PM CST