Gold Ringer
Cypraea annulus
Also known as: goldringer, ring cowrie
A small Indo-Pacific cowrie with a distinctive golden ring and peaceful nature.

About
The Gold Ringer (Cypraea annulus) is a marine cowrie shell native to the shallow coastal waters of the Indo-Pacific, typically found hugging the seafloor at depths of just a meter or two down to about eight meters. It is immediately recognizable by the bright golden-orange ring on the dorsal surface of its glossy, rounded shell. A feature that makes it one of the more easily identified cowries in the hobby. Like all cowries, the living animal periodically extends its soft mantle over the shell, which is how that characteristic porcelain-smooth surface is maintained. In the aquarium, this species is benthic by nature, spending most of its time moving slowly along rockwork and substrate. It is peaceful and poses no real threat to tankmates, making it a reasonable choice for a community reef setup. As an herbivore, it grazes on algae and organic material, which means it can actually do some useful cleanup work in a well-established system. Given its straightforward temperament and modest demands, it is generally considered accessible even for newer marine keepers, provided the tank has been properly cycled and offers enough live rock to support natural grazing. Expect a lifespan in the range of two to three years under good conditions.
Similar species
Other invertebrate you might consider
Good tank mates
Species that tend to coexist peacefully with Gold Ringer
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Gold Ringer get?
- The Gold Ringer reaches about 1–6" as an adult.
- What size tank does the Gold Ringer need?
- A minimum of 30 gallons is recommended for the Gold Ringer.
- What water parameters does the Gold Ringer need?
- The Gold Ringer does best with a temperature of 72–80°F, a pH of 8–8.4, hardness around 8–12 dGH.
- Is the Gold Ringer aggressive?
- The Gold Ringer is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Gold Ringer eat?
- The Gold Ringer is a herbivore. It needs a plant-based diet such as algae, blanched vegetables, or spirulina-based foods.
- How long does the Gold Ringer live?
- With good care, the Gold Ringer typically lives 2-3 years.
- Is the Gold Ringer reef safe?
- The Gold Ringer is generally considered reef safe.