Fungia Coral Care Guide for Beginners
Learn how to care for fungia corals with proper lighting, water flow, feeding, and placement tips. A practical guide to keeping fungia corals healthy and growing in reef aquariums.
Fungia coral, often called plate coral, is a single-polyp LPS coral with a round or oval skeleton and fleshy tissue that expands across the top. Most plate corals have short tentacles, a central mouth, and a low, flat shape that makes them easy to recognize on the sandbed.
Fungia corals are usually kept because they bring movement and shape without needing a complex placement plan. They can inflate, shift position slightly, and sometimes move themselves if flow or sandbed conditions allow it.
A healthy fungia coral usually looks puffy, open, and responsive. Its color, extension, and feeding response depend heavily on lighting, flow, sandbed stability, nutrients, and whether the coral is being irritated by nearby corals or debris.
Note: Fungia coral needs open space. It can sting nearby corals, and it can also be damaged if placed against sharp rock. Plate corals should not be glued down or wedged tightly into rockwork because their tissue needs room to expand and move.
Lighting Requirements
Fungia corals usually prefer moderate lighting. They can handle brighter reef lighting once adjusted, but sudden exposure to high PAR can cause retraction, fading, or bleaching.
A good starting point is the sandbed under moderate light. Once the coral stays inflated and keeps stable color, it can be left alone or adjusted slowly if the tank is very dim.
When lighting is too strong, fungia coral may stay tight against the skeleton or begin to pale. When lighting is too weak, it may remain alive but expand less, feed less strongly, and grow slowly.
Flow
Fungia corals generally prefer low to moderate flow. The flow should move across the coral enough to keep detritus from settling, but not so much that the tissue is pushed hard against the skeleton.
When flow becomes too strong, the coral may retract, slide around, or collect damage along the tissue edge. Strong direct flow can also make feeding difficult because food gets pulled away before the coral can capture it.
Gentle, indirect flow is usually best. The tentacles should move slightly, but the coral should not be flipping, tumbling, or constantly shifting across the sand.
Placement
Fungia coral is best placed on the sandbed. The sandbed gives the coral a softer surface and allows the fleshy tissue to expand without rubbing against sharp rock.
Plate corals should not be placed in tight rock pockets. They can inflate and move, and if the tissue rubs against rock, the edge may tear or recede.
Once the coral settles and stays open, it is usually better to leave it in place. Fungia corals tend to adjust well when they are given open sand, moderate light, and steady flow.
Aggression
Fungia coral can be more aggressive than it looks. It has a sting and can irritate or damage nearby corals if they touch.
The coral also needs space because it may inflate and shift position. A plate coral that looks safely placed during the day may still reach nearby corals when fully expanded.
Keep fungia coral away from fleshy LPS corals, zoanthids, mushrooms, and other corals that might touch its tissue. In most cases, open sand around the coral is the safest setup.
Feeding Fungia Corals
Fungia corals usually have a strong feeding response. They can capture small meaty foods with their tentacles and slowly move food toward the central mouth.
Small pieces of mysis, chopped seafood, brine shrimp, or soft coral pellets usually work well. Large pieces should be avoided because the coral may struggle to digest them or release them later.
Feeding once or twice a week is usually enough in a stable reef tank. Once the coral shows regular expansion and a clean feeding response, light feeding can support tissue fullness and growth.
Water Parameters
Recommended Water Parameters for Fungia Coral
| Parameter | Recommended Range |
|---|---|
|
76–80°F |
|
1.025–1.026 SG |
|
8.0–8.4 |
|
8–9 dKH |
|
400–450 ppm |
|
1250–1400 ppm |
|
5–15 ppm |
|
0.03–0.10 ppm |
Fungia corals prefer stable reef parameters. They can tolerate normal mixed-reef conditions, but sudden changes in salinity, alkalinity, or temperature often cause retraction and stress.
Moderate nutrients are usually fine. Very low nutrients can lead to pale tissue and weak feeding response, while high nutrients can increase algae growth around the skeleton or on the sandbed.
Fungia Coral Growth and Spreading
Fungia coral grows slowly in most reef tanks. Growth usually appears as a larger skeleton, fuller tissue, better feeding response, and stronger extension over time.
Most fungia corals remain as a single plate rather than forming branching heads. Some plate corals can produce small baby corals from old skeletons after stress or damage, but this is not something to rely on as a normal growth method.
Fragging fungia coral is generally not recommended for most hobbyists. Cutting through a single-polyp plate coral can cause serious tissue damage and long recovery times.
If the coral is damaged, stable conditions are more useful than extra handling. Gentle flow, moderate light, clean sand, and careful feeding usually give it the best chance to recover.
Frequently Asked Question
Yes, fungia coral should usually sit on the sandbed. The sandbed gives the coral room to expand and reduces the chance of tissue damage from sharp rock. Make sure the coral is not being buried by shifting sand.
Yes, fungia coral can move slightly by inflating its tissue and using flow or sandbed movement. It will not move like an anemone, but it can shift position over time. This is one reason it should not be glued down.
Fungia coral can sting nearby corals, especially if they touch its tissue. It should be given open space on the sandbed. Even though it looks simple, it should not be crowded into a mixed coral garden.
Fungia coral may stay closed because of strong flow, sudden lighting changes, unstable parameters, or irritation from sand and nearby corals. Check whether the tissue is being pushed, buried, or rubbed. Once the stress is corrected, it may take several days to fully expand again.
Fungia coral does not need heavy feeding, but it usually responds well to occasional small meaty foods. Feeding once or twice a week can support tissue fullness and recovery. Food should be small enough for the coral to capture and digest.
It is usually better not to place fungia coral on rock. Its fleshy tissue can rub against sharp edges, and the coral may shift or fall. A flat, open sandbed area is safer in most tanks.
Fungia coral is not commonly fragged because it is usually a single-polyp coral. Cutting it can cause serious damage and slow healing. Most reef keepers treat it as a whole coral rather than a coral for regular fragging.
