Crystal Jelly (GFP Jellyfish) care guide
Aequorea victoria · Aequoreidae
Crystal Jelly (Aequorea victoria) is an aquarium animal. It belongs to the Aequoreidae family. It is native to Northeast Pacific coast of North America, from the Bering Sea to southern California; abundant in Puget Sound. A hydromedusa (class Hydrozoa).. Water temperature: Cold seawater (no verified figure). Care difficulty: Difficult.
How do you care for Crystal Jelly (GFP Jellyfish)?
| Light | Body is almost transparent. The green fluorescent ring shows only under UV or deep blue light; use side lighting and a dark background to see it. |
|---|---|
| Temperature | Cold seawater (no verified figure) |
| Placement | Chilled kreisel-style display in public aquaria, bare tank, gentle flow. One hobby database rates it unsuitable for aquaria. No salinity or flow figures were found. |
| Growth | Bell commonly about 8-20 cm (sources conflict on maximum size). About six months as a free medusa in the wild. Captive husbandry data are very limited. |
| Difficulty | Difficult (cold-water specialist; not suitable for home aquaria; husbandry data are limited) |
| Family | Aequoreidae |
How do you trim and propagate Crystal Jelly (GFP Jellyfish)?
No sourced maintenance schedule or captive diet; follow general jelly-tank practice. In the wild it eats mostly other jellies, crustacean larvae and fish eggs/larvae (and is cannibalistic). Life cycle alternates a bottom polyp and a free medusa; polyps bud medusae in late spring.
What problems affect Crystal Jelly (GFP Jellyfish)?
The animal is almost invisible in the tank because the bell is transparent. It declines in warm water, being a cold-water species.
How do you fix Crystal Jelly (GFP Jellyfish) problems?
Use side lighting and a dark background; blue or UV light reveals the green ring. Keep it chilled and do not attempt it in an unchilled tank.
Where does Crystal Jelly (GFP Jellyfish) come from?
Northeast Pacific coast of North America, from the Bering Sea to southern California; abundant in Puget Sound. A hydromedusa (class Hydrozoa).
What should you know before buying Crystal Jelly (GFP Jellyfish)?
Sting severity is not described in the sources consulted; treat any hydromedusa as capable of stinging and handle with gloves. Not for home aquaria; never release captive animals into the wild. Source of GFP (2008 Nobel Prize in Chemistry).
Sources
- Aequorea victoria — Wikipedia
- Crystal Jelly — Oregon Coast Aquarium
- Aequorea victoria — Reeflex marine animal database
Care details checked against these sources on 2026-10-07.
See Crystal Jelly (GFP Jellyfish) in a living world
- Deep Sea Crystal Jellies — aquarium
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