Currently no wildlife management of these species. Although it would work as well, there is currently no farming program for the sailfins as there are for the green iguanas. They are the largest of the Agamidae family. Males can reach 3.5 feet, females somewhat less. Males recognized by the development of their tail crest, appearing as buds at about 6 months of age in captivity.
Males develop enlarged nasal knobs, but so do some females.
Males have larger pre-anal and femoral pores. One 15.5 year old H. amboinensis was still living in 1992. Overcrowding and territorial stress include hiding most of the time, inanition, listlessness. Mature animals require viviariums 5' long or longer. Large plants, bark and cork substrate, and a large pan of water for swimming, soaking and defecation a must.