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  • Erethistes filamentosus
  • Erethistes filamentosus
  • Erethistes filamentosus
Jump to next section Cat-eLog Data Sheet
Scientific Name Erethistes filamentosus  Blyth, 1860
Common Name
Type Locality Megathat Chaung, Myanmar.
Synonym(s) Erethistes maesotensis, Hara filamentosus, Hara maesotensis
Pronunciation fila ment osaa
Jump to next section Species Information
Size 75mm or 3" SL. Find near, nearer or same sized spp.
Identification Hara filamentosa can be distinguished from congeners (except H. mesembrina and H. longissima) in sometimes having (vs. always lacking) a filamentous extension to the first principal ray of the upper caudal-fin lobe; it is also distinguished from all congeners except H. hara and H. longissima in having a short posterior process on coracoid (reaching to midway of distance between bases of pectoral spine and first pelvic-fin ray vs. two thirds or beyond; length 19.9-22.8% SL vs. 23.5-38.3). It differs from H. longissima in having a shorter (length 14.9-17.8% SL vs. 18.8-21.3) and deeper (depth 6.1-7.2% SL vs. 5.0-6.1) caudal peduncle (depth 2.1-2.9 times in its length for H. filamentosa vs. 3.1-3.9 times in H. longissima) and deeper body (depth 13.9-19.2% SL vs. 12.5-14.5). Hara filamentosa can be further distinguished from H. hara in having a longer adipose-fin base (15.7-21.7% SL vs. 11.8-15.6),deeper caudal peduncle (depth 6.1-7.2% SL vs. 5.0-5.8) and lacking (vs. presence) of serrations on the anterior edge of the dorsal spine, from H. horai in having a deeper caudal peduncle (depth 6.1-7.2% SL vs. 5.2-6.2) and a shorter adipose-fin base (length 5.7-21.7% SL vs. 10.0-13.7) and head (length 26.5-29.1% SL vs. 30.3-34.2), from H. jerdoni in having a shorter pectoral spine (length 23.3-29.9% SL vs. 42.2-51.7), more soft pectoral-fin rays (total number of soft fin rays modally 7 vs. 5), more vertebrae (31–34 vs. 27-29), the supraoccipital spine not reaching (vs. reaching) the anterior nuchal plate and a deeply forked (vs. emarginate) caudal fin. It differs from H. mesembrina in having a shorter caudal peduncle (length 14.9-17.8% SL vs. 17.2-18.9), from H. minuscula in having more soft pectoral-fin rays (total number of soft fin rays modally 7 vs. 5) and the supraoccipital spine not reaching (vs. reaching) the anterior nuchal plate, and from H. spinulus in having a longer dorsal spine (length 20.4-27.6% SL vs. 14.7-19.8), adipose-fin base (length 15.7-21.7% SL vs. 12.9-16.1) and caudal peduncle (length 14.9-17.8 % SL vs. 11.8-15.0).
Jump to next section Habitat Information
Distribution Ataran, Salween and Sitting river drainages: Myanmar and Thailand.
Myanmar Waters, Tenasserim (click on these areas to find other species found there)
Salween (click on these areas to find other species found there)
Salween, Ataran (click on these areas to find other species found there)
Myanmar Waters, Sittang (click on these areas to find other species found there)

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Jump to next section Husbandry Information
Furniture Fine sand for the bottom and smooth pebbles / rocks. This group of fishes will appreciate some amount of plant cover too.
Compatibility A peaceful species suitable for a hillstream biotope.
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
References J. Asiatic Soc. Bengalv. 29 (no. 2) - pp152
A review of the catfish genus Hara, with the description of four new species (Siluriformes: Erethistidae) Heok Hee NG & Maurice Kottelat
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Last Update 2015 Dec 18 09:06 (species record created: 2006 Aug 22 09:46)