Tja, jag har ju vid flera tillfällen redogjort för mina erfarenheter med dessa raringar. Att det skulle finnas framodlade giftfria varianter ser jag som osannolikt av ett par mycket enkla skäl - de flesta djur av dessa arter är mycket svåra att odla och framförallt så är deras kommersiella potential mycket låg. Från Burgess atlas Pseudocolochirus violaceus Quick Stats: Philippine Sea Apple Family: Cucumariidae Range: Eastern Indian Ocean, Western Pacific Size: Up to 7 inches Diet: Filter feeder Tank Set-up: Marine: Coral or rock, sand Reef Compatible: With caution Tank Conditions: 72-78ºF; sg 1.023-1.025; pH 8.1-8.4 Temperament: Peaceful Venomous: Yes Care Level: Experts only The body and tentacles of the Philippine Sea Apple, can be a vareity of colors, but it always has yellow feet. The oral region is usually blue to violet, hence the common name Violet Sea Apple or Violet Sea Urchin. It prefers an established reef aquarium with room to move about, and large amounts of live rock from which it receives a majority of its food. Once it finds a favorable location, usually in a high current area, the Philippine Sea Apple will generally stay there. Protect all intakes on pumps and power heads, to eliminate any possibility of being sucked in. It is very sensitive to high levels of copper-based medications. Sudden changes in pH or salinity can cause it to shed its oral tentacles. Do not house these cucumbers in an aquarium that contains any fish that may pick on its tentacles. Generally, any fish that is prone to pick on feather dusters, will pick on the tentacles of the Philippine Sea Apple. These fish include; Butterflyfish, Large Angels, and any species that is listed not safe with invertebrates. When feeding, it will extend its oral tentacles into the current to filter out food. As the food is trapped, it will then draw its entire tentacle into its mouth. In the aquarium, it will need to be fed a diet of phytoplankton - frozen, liquid, or dried - on a daily basis. NOTE: If the Philippine Sea Apple should become stressed or die, it will release deadly toxins into the water (possibly causing tank wipe out). Från about.com, saltwater aquariums: Australian Sea Apple (Paracucumaria tricolor, sometimes labeled as Pseudocolchirus violaceus and P. oxiolugus.) Range: Australia Size: To about 4 inches. Characteristics: Highly Toxic! Indonesian/Red Sea Apple (Pseudocolochirus axiologus) Range: Indonesia Size: To about 4 inches. Characteristics: Highly toxic!