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Marine Depot Species Database Education Center - Species Database

Saddle (Jansen) Wrasse
Saddle (Jansen) Wrasse
Thalassoma jansenii

The Thalassoma jansenii or Jansens Wrasse is harmless to corals but will pick at ornamental crustaceans, snails, serpent stars, bristleworms, mantis shrimps and very small fish. Needs planty of swimming room and will harass new fish introduced to the tank if they are smaller or close in shape. Best added as one of the last fish. Keep with larger and belligerent fishes. Offer love rock with many places for them to hide in at night or when frightened as they do not bury in the sand.
Maximum Size: the Thalassoma jansenii grows up to 10 inches.
Minimum Tank Size: The Saddle (Jansen) Wrasse prefers a tank of at least 80 gallons with plenty of places to hide & swi
Diet: The Thalassoma jansenii is a carnivore and likes to eat Variety of meaty treats including frozen mysis, saltwater feeder shrimp, squid, scallop clam and other crustaceans..
Level of Care: The Saddle (Jansen) Wrasse is a medium maintenance fish.
Behavior: The Saddle (Jansen) Wrasse may act semi-aggressively toward other fish.
Hardiness: this is a moderately hardy fish
Water Conditions: Keep water quality high (SG 1.020 - 1.025, pH 8.1 - 8.4, Temp. 72 - 78 F).
Range: indo-Pacific.

Species Compatibility Checker

It is important to make sure species can peacefully cohabitate before adding livestock to an aquarium. Use our handy species compatibility checker to determine if the animals on your wish list will play nice together.

Species Compatibility Chart
Marine Depot Species Compatibility Chart

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