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Phylum Chordata > Subphylum Vertebrate > fishes > Family Monacanthidae
Seagrass filefish
Acreichthys tomentosus*

Family Monacanthidae
updated Sep 2020

Where seen? This filefish with with a 'smiley' on the side of the body is commonly seen on many of our shores, among seagrasses and seaweeds on coral rubble.

Features: To 12cm, those seen about 7cm. An irregular curved yellow or white line along the front of the body from the gill opening to the middle of the upper body, that resembles a 'smile'. Body in a wide variety of colours and patterns, usually irregular blotches. Adult males have bristles near the tail fin arranged a well-defined central oblong patch. More on how to tell apart filefishes.

Tanah Merah, Jun 09

Pale or white curved line from gills
to middle of the upper body.
Tanah Merah, Aug 09

Adult males with bristles in an oblong patch near the tail fin.
Sisters Island, Jul 07


Tanah Merah, Jul 11
What does it eat? It feeds on small creatures that live on the bottom such as amphipods, worms and snails.

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Seagrass filefishes on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Chek Jawa, Jun 14
Photo shared by Loh Kok Sheng on his blog.


East Coast Park, Aug 20
Photo shared by Vincent Choo on facebook.

East Coast-Marina Bay, Nov 17
Photo shared by Loh Kok Sheng on facebook


Sentosa Serapong, May 16
Photo shared by Marcus Ng on facebook.

Lazarus Island, Feb 11
Photo shared by James Koh on his blog


Lazarus Island, Feb 11
Photo shared by Russel Low on facebook.

Sentosa Serapong, May 16
Photo shared by Marcus Ng on facebook.


Pulau Semakau (North), Apr 16
Photo shared by Jianlin Liu on facebook.

Terumbu Semakau, Apr 13
Photo shared by Loh Kok Sheng on flickr.

Terumbu Raya, Jul 11
Photo shared by Loh Kok Sheng on flickr.


Terumbu Bemban, Jun 17
Photo shared by Abel Yeo on facebook.

Terumbu Pempang Laut, May 19
Photo shared by Kelvin Yong on facebook.

Terumbu Pempang Kecil, Jan 15
Photo shared by Jianlin Liu on facebook.


Raffles Lighthouse, Aug 08
Photo shared by Loh Kok Sheng on flickr.


Pulau Salu, Apr 21

Photo shared by Jianlin Liu on facebook.

Pulau Sudong, Dec 09
Photo shared by Ivan Kwan on his flickr.

Pulau Pawai, Dec 09


Pulau Senang, Jun 10

Pulau Senang, Jun 10

Pulau Senang, Jun 10

Seagrass filefish (Acreichthys tomentosus)

Links

References

  • Lieske, Ewald and Robert Myers. 2001. Coral Reef Fishes of the World Periplus Editions. 400pp.
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