Long Tentacle Anemone Care Guide

Macrodactyla doreensis · Saltwater Anemone

Long Tentacle Anemone
AI-generated illustration of Long Tentacle Anemone
Suggested tank
20+ gal
Placement
Sandbed
Flow
Medium

What Long Tentacle Anemone look like

Macrodactyla doreensis, commonly known as the Long Tentacle Anemone, exhibits a distinctive morphology characterized by its elongated, slender tentacles that can reach lengths of up to 30 cm (12 inches). The anemone typically has a cylindrical column that can vary in color from brown to green, often with a mottled appearance. Its maximum adult size can reach approximately 25 cm (10 inches) in diameter. Sexual dimorphism is not pronounced in this species; however, individuals may exhibit slight variations in tentacle length and coloration based on environmental conditions. The tentacles are equipped with specialized nematocysts, which serve as a defensive adaptation against predators. Unique features include a prominent oral disc surrounded by numerous tentacles that exhibit a characteristic swaying motion in water currents, enhancing their ability to capture prey.

Behavior & temperament

In terms of behavior, Macrodactyla doreensis is generally a solitary anemone, often found in sandy substrates or among rocks in shallow waters. It exhibits a semi-sessile lifestyle, allowing for limited movement to adjust its position for optimal light and water flow. The anemone extends its long tentacles to capture zooplankton and small fish, utilizing its stinging cells to immobilize prey. It can form symbiotic relationships with certain clownfish species, providing shelter and protection in exchange for food scraps. The Long Tentacle Anemone displays a moderate level of aggression towards other anemones and can engage in territorial disputes, using its tentacles to fend off intruders.

Diet & feeding

Macrodactyla doreensis is primarily carnivorous, feeding on small fish, zooplankton, and other marine invertebrates. In captivity, it requires a diet of meaty foods such as shrimp, fish, and specialized anemone food to thrive.

Behind the name

The genus name 'Macrodactyla' is derived from the Greek words 'makros' meaning 'long' and 'dactylos' meaning 'finger', referring to the anemone's elongated tentacles. The species name 'doreensis' is derived from the Latin word 'doreens' which refers to the region of its discovery.

Plan your tank

Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.

Keeping Long Tentacle Anemone?

AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.

Get AquaLens Free