Ghost Shrimp

Geographical Origin and Habitat: Palaemonetes paludosus is native to the southeastern United States, primarily found in Florida, Georgia, and the Atlantic coastal plain. It inhabits slow-moving rivers, ponds, lakes, and marshes with dense aquatic vegetation and submerged woody debris.

Taxonomy: Belonging to the family Palaemonidae, this is a small freshwater shrimp with adults reaching 3.5-4.5 cm. It features a highly elongated body, a long, toothed rostrum, and slender, delicate pincers. Its body is highly transparent, acting as natural camouflage.

Social Behavior: Peaceful, active, and gregarious. They are not overly shy and will actively swim and crawl throughout the aquarium during the day. They should be kept in groups of at least 6-8 individuals to encourage natural foraging and cleaning behaviors.

Coloration and Sexual Dimorphism: The body is completely transparent (glass-like), showing internal organs and food. Some specimens may show tiny orange spots on the antennae and tail. Females are larger and wider, carrying bright green eggs under their abdomen.

Tank Setup: A tank of at least 20-30 liters is recommended. Provide live plants, driftwoods, and caves. Hiding places are essential during the molting process when the shrimp's new shell is soft and vulnerable to fish or conspecific nipping.

Diet and Feeding: Opportunistic omnivorous scavengers. They eat leftover fish food, organic detritus, decaying plant leaves, and biofilm. Supplement their diet with sinking shrimp pellets, algae wafers, and fish flakes. They are highly efficient tank cleaners.

Water Quality: Highly adaptable and hardy: temperature 18-28°C, pH 6.5-8.0, GH 6-20, and KH 3-10. Sensitive to spikes in ammonia and nitrites. Regular water changes are recommended. Avoid copper-based medications and chemical treatments.

Compatibility and Tankmates: Safe to house with small, peaceful community fish (e.g. tetras, guppies, rasboras). Do not house with predatory, territorial, or large fish (such as cichlids, angelfish, or large catfish) that will view the transparent shrimp as prey.

Aquarium Breeding: Breeding is possible but requires a separate rearing tank. Unlike Neocaridina, Ghost Shrimp hatch as free-swimming planktonic larvae (zoea). They require microscopic foods (infusoria, rotifers) to survive before metamorphosing into miniature shrimp.

Risks and Diseases: Predation by larger fish is the main hazard. Muscular necrosis (where the body turns an opaque milky-white color instead of transparent) is a common bacterial infection, usually triggered by poor water quality or stress, and is often fatal.