Paraluteres prionurus

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Facts
Latin name Paraluteres prionurus - (Bleeker, 1851)
Local name False puffer
Family Monacanthidae - Paraluteres
Origin East Indian Ocean, West Indian Ocean, Australia, Japan, Indonesia, East Pacific, Central/West Pacific
Max length 11 cm (4,3")
As aquarium fish
Minimum volume 300 cm (79 gal)
Hardiness Average
Suitable for aquarium Suitable with care
Reef safe Reef safe with luck
Aggressiveness Might be aggressive towards similar species
Feed
Recommended Microalgea (Eg. spirulina)
Macroalgea (Eg. seaweed / nori)
Small crustaceans (Krill, mysis, artemia...)
Maybee Other invertebrates
Soft coral
Large polyp stone coral (LPS)
Beware of
Eats tubeworms

This species likes to eat tubeworms.

Keep in mind
Reef safe, when well fed

This species can be found nibbling soft coral and LPS if there is insufficient food available.

Frequent feeding

This fish requires feeding several times a day, especially when newly added.

When the fish can find its natural food in the aquarium it requires less frequent feeding. 

Hiding places

This species needs good hiding places, for example, between live rocks.

Docile

This species is very shy and docile, so one should be careful when keeping it with more aggressive fish.

Descriptions and further reading
Description

This filefish mimics Canthigaster valentini.
The filefish has two dorsal fins, while the toby has one.

Family description (Monacanthidae)

Filefish (Monacanthidae) have a very characteristic appearance, but whether one likes them or not is a matter of taste. 

Some species are suitable for aquaria, although they will occasionally eat a coral or invertebrate. They are therefore not so well suited to coral tanks.
They are often used to fight glass anemones (Aiptasia) and Majano anemones. Pervagor nigrolineatus is especially good at this.

They need peace and quiet from both the aquarist and other fish, when adjusting to the tank life.

Be careful when catching them, as they easily becomes caught in the net.

FishBase
Distribution Indo-Pacific: East Africa south to Aliwal Shoal, South Africa (Ref. 4421) and east to Fiji, north to southern Japan, south to the southern Great Barrier Reef and New Caledonia. Recently recorded from Tonga (Ref. 53797). Replaced by <i>Paraluteres arqua
English common names False puffer
Mimic filefish
Mimic leatherjacket
Black-saddled leatherjacket
Blacksaddle mimic
French common names Faux poisson coffre
References and further reading

About references

Dave Wolfenden. 2013. Filefish: A bit of rough! - Practical Fishkeeping - (English)
Scott W. Michael. Can You Add Filefish to a Reef Tank? - Fish Channel - (English)
Bob Fenner. Filefishes, Family Monacanthidae, Part I, Part II, Part III - Wet Web Media - (English)
Scott W. Michael. Those Fabulous Filefish - Tropical Fish Hobbyist Magazine - (English)