|Latin name||Pseudojuloides elongatus|
|Local name||Long green wrasse|
|Family||Labridae - Pseudojuloides|
|Origin||Australia, Japan, Indonesia, New Zealand, Central/West Pacific|
|Max length||14 cm (5,5")|
|Minimum volume||800 cm (211 gal)|
|Suitable for aquarium||Experience, preparation and extra care required|
|Reef safe||Reef safe with caution|
|Aggressiveness||Mostly peaceful but might be aggressive towards similar species|
Zooplankton (Cyclops, pods...)
Small crustaceans (Krill, mysis, artemia...)
This species is known to jump out of open aquaria.
This species requires feeding 4 or more times a day.
Hard to give this species the correct nutrition and is therefore hard to keep alive.
There is little available knowledge of this species, so there can be important information missing on this page.
This species must be fed with an appropriately varied diet.
This species is very sensitive during transportation and acclimatizing into the aquarium.
This species needs a minimum of 2 inch (5 cm) of sand in the aquarium bottom, so it can dig itself down when afraid or needing to sleep.
This species thrives best when there is a sufficiently large amount of micro life (copepods, amphipods or similar) in the aquarium, so that the it can always find their own food.
This species can live as a pair (male and female).
This species can change gender from female to male.
When a male is needed, a female changes sex and takes on the role.
Pencil Wrasses are a tempting buy, but can be hard to keep successfully for a long time. After a while many die due to malnutrition.
If one is determined to try, it is vital that there is a healthy amount of pods in the aquarium so they can find their own food. In addition it is important to supplement feed, several times a day with a variety of foods, like Mysis, Artemia and cyclops.
These fish dig themselves in at night to sleep or when they feel threatened.
Wrasses are nearly always seen in reef aquaria, since many of the species are both attractive and useful in battling a range of unwanted invertebrates like i.e. flatworms, pyramide snails.
These fish live of everything from zooplankton to large crustaceans, sea urchins and the like.
The needs and behaviour of Wrasses vary greatly, so it is vital to familiarize oneself with the specific species before buying one.
Bob Fenner. The Pencil Wrasses, Genus Pseudojuloides - Wet Web Media - (English)
Scott W. Michael. 2009. Wrasses and Parrotfishes (Reef Fishes Series Book 5) - TFH Publications / Microcosm Ltd. - (English)
"Minimum volume" indicates the size of the tank needed to house this species under optimal conditions.
This is based on a medium size animal, which you want to keep for several years.
It might be possible to keep smaller specimens for a limited period in a smaller tank. A larger tank might be needed for fully-grown specimens.
"Hardiness" indicates how resistant this species is to disease and how well i tolerates bad conditions in general.
Some species doesn't handle transportation very well, but that doesn't mean that the species isn't hardy under the right conditions.
In this case, a "normal" aquarium is a reef aquarium with mixed corals or a fish only aquarium with an approximately salinity of 1.026 (sg) and a temperature close to 26°C.
Species requiring more than a 4000-liter tank are considered not suitable for home aquarium.
Special aquariums may cover tanks with low salinity, sub-tropical temperature, deep sand bed, sea grass etc.
Always reef safe: No sources indicate that this species will harm corals or other invertebrates.
Often reef safe: Only a few aquarists has reported problems keeping this species with corals and other invertebrates.
Reef safe with caution: This species may be a threat to some types of invertebrates.
Reef safe with luck: Most specimens will harm corals and/or other invertebrates, but you might be lucky.
Not reef safe: This species is a threat to most corals and/or other invertebrates.