Clibanarius spp. They are big, heavy, and can be pretty mean too. As with most crabs, emerald crabs are very opportunistic feedings that have also been known to try to steel food and will aggressively try to get. Emerald Crab and Molting. How big do emerald crabs get?? Below is a quick video of an Emerald Crab scavenging the bottom of a … Stocking wise, it is recommended to keep only 1 crab per 20 or 25 gallons. With time, as they outgrow the existing … emerald crabs? do they get … I have also caught the Emerald Crab picking at other forms of nuisance algae as well. Emerald crabs are very good little scavengers and members of almost any clean-up crew. It’s recommended that you have no more than 1 crab per square foot. Should emerald crabs get this big? I have also caught the Emerald Crab picking at other forms of nuisance algae as well. - i feel like i'm posting a super lot today, but better to post than make a big mistake hey?? Like other invertebrates, the Emerald Crab does not tolerate copper-based medications or fluctuating water parameters. Emerald crab will eat a lot of algae growing in your aquarium as the biggest part of their diet. July 27, 2016 3 Comments. The size of your tank will depend on how many crabs you plan to own. Pic. I'd recommend getting a few and getting them smaller (less than 1.5 inches around including legs). My tank is about five years old and my water parameters are all in check. As we saw in our previous post, the Emerald Crab was rated the #1 algae eater in a saltwater aquarium. The Horseshoe Crab is really not a crab, but more closely related to spiders and mites, belonging to a group of animals called chelicerates. Hermit Crab Red legs, Blue legs and several other species of saltwater hermit crabs can make rather good scavengers but watch them closely around snails and other invertebrates. Emerald Crab - A Detailed Look At the Best Crab For Your Clean Up Crew. About a week ago I was re-arranging some LR and I felt something grab my wrist, it scared the hell out of me! The female horseshoe crabs usually grow larger than the males, with their body … Below is a quick video of an Emerald Crab scavenging the bottom of a … The Emerald Crabs are also scavengers and will also eat bits of food which have gotten away from fish or corals. This past summer I noticed a pretty large crab in my tank for the first time. This is not a type of hermit crab you want at home. Add a secure lid to your tank since crabs like to climb. Today, I scrubbed my tank down and saw one of my emerald crabs. I wanted to dive in deeper in this post about this crab and why this crab is a great addition to your saltwater tank.