Mangrove Box Jellyfish

Tripedalia cystophora

A tiny species of Box Jellyfish measuring only 3" or so with tentacles. Originally found living amongst the roots of Mangrove plants in the Caribbean, these cubozoans have invasively made home in other tropical areas, such as south Florida. Although bearing a striking resemblance to a more sinister species Tripedalia have only a minor sting to which many report no effects at all. Somewhat seasonal, these jellies can be found when the water temperature exceeds 77 °F. Mangrove box jellies have several rudimentary eyes which give them the capability to dodge solid colored objects; like mangrove roots.

Caring for Mangrove Box Jellyfish

Mangrove Box Jellies are moderately challenging to care for and definitely have a few quirks. Firstly, they stick to everything, including the surface water. A decent amount of water flow seems to help with this and they eventually grow out of this once they surpass a half inch or so. Secondly, they like their water warm. At least 77° F is a must, but closer to 80° F is better.

Stocking density: Being so small, you can comfortably house quite a few of these in an average jellyfish aquarium. For a 5 gallon tank, we recommend 5-6.

Flow: These jellies are strong swimmers and don't really need any help keeping themselves suspended. That being said, some flow may help prevent them from sticking to things or getting stuck in one spot. Try medium and work from there.

Feeding: Currently, live brine shrimp seems to be the best, and only realistic food item.