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EW-MAL 06-09 Sungai Mahua
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Location
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Sungai Mahua, stream on the road Tambunan - Ranau, crossing road left - right, Crocker Range east face, Tambunan county, Sabah, Borneo, Malaysia
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GPS coordinates
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756 m asl, N 05º 45', E116º 26'
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Date
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2009-06-03
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Time
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14:40
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Biotope
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Hillstream with moderate - fast flowing water, potholes, riffles. Stream max 3 m, 0.2 m deep, in potholes around 0.8 m deep, no vascular water plants, sand, pebbles, boulders, leaf litter along the banks, clear water.
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Parameters
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Temperature
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27
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ºC
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pH
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7.6
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pH
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Conductivity (EC)
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50
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µS/cm
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Hardness General
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ºGH
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Hardness Carbonate
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ºKH
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Nitrite
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mg/l
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Total Dissolved Solution (TDS)
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25
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ppm
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Species
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Protomyzon whiteheadi (Vaillant, 1894)
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plenty
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Protomyzon borneensis Hora & Jayaram, 1952
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average
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Gastromyzon sp.
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few
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Cyprinidae sp.
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few
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Shrimps
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few
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Remarks
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Biotope EW-MAL 06-09 was a Protomyzon habitat. They were virtually everywhere. We found two species of Protomyzon.
Juvenile Protomyzon sp. feeding upon detritus along the banks. Photograph was taken through the water surface.
Protomyzon borneensis was found in EW-MAL 06-09 only.
Protomyzon borneensis, lateral view.
Protomyzon borneensis, abdominal view.
Protomyzon whiteheadi, lateral view.
Protomyzon whiteheadi, abdominal view.
Protomyzon whiteheadi and closely related P. borneensis can be reliably distinguished by the abdominal squamation and mouth/head width relation.
Leaving biotope EW-MAL 06-09 we headed northward and visited a waterfall situated in pristine rain forest. The way there was half the fun.
The picture shows an awesome balitorid habitat. We did not fish here since we were in a National Reserve.
We followed a path through primary rain forest to reach the waterfall.
Finally, the cataract for local entertainment makes a great visual impact.
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EW-MAL 07-09 Ranau Market
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Location
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Market in Ranau, Sabah, Borneo, Malaysia
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GPS coordinates
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756 m asl, N 05º 45', E116º 26'
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Date
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2009-06-04
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Time
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07:00
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Species
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Hypsibarbus wetmorei (Smith, 1931)
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Pseudolais tubbi (Inger & Chin, 1959)
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Remarks
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EW-MAL 08-09 Fish Massage Ranau
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Location
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Left of the road Ranau - Telupit, 5 km after Ranau, commercial 'Swimming with Fish' station, Sabah, Borneo, Malaysia
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GPS coordinates
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335 m asl, N 05º 56.812', E116º 46.190'
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Date
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2009-06-04
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Time
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08:30
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Biotope
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Nameless tributary of the Liwagu River, pool like section, 50 x 20 x 2 m
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Species
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Tor tambra (Valenciennes, 1842)
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abundant
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Hypsibarbus wetmorei (Smith, 1931)
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Gastromyzon sp.
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Homaloptera sp.
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Remarks
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‘Fish Massage’, at least 8 different species. We bought food and swam with the fishes.
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A batch of Hypsibarbus wetmorei for sale at the market of Ranau.
This species can be recognized by the presence of barbels, relatively high bodied, orange-reddish pelvic and anal fins.
A commercial spot; we paid for swimming with the fishes. It was nice. Plenty of not shy at all Tor tambra.
This is the east face of Mount Kinabalu, view towards west. In the foreground you can see tea plantation. Tea production is one of the most important branches in Borneo.
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EW-MAL 09-09 Liwagu River
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Location
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Nameless tributary to Liwagu River on the road Ranau - Telupit, crossing road left - right, 60 km to Telupit, Sabah, Borneo, Malaysia
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GPS coordinates
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251 m asl, N 05º 51', E116º 49'
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Date
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2009-06-04
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Time
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10:20
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Biotope
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Stream with moderate current running into the Liwagu River, canopy coverage 80%, at the Liwagu River just 30%, max 5 m, 0.3 m deep, no vascular water plants, sand, pebbles, boulders, leaf litter along the banks, water: slightly turbid
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Species
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Garra borneensis (Vaillant, 1902)
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plenty of fry along the shallow banks
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Gastromyzon ssp.
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plenty of fry along the shallow banks, not caught
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Remarks
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This is the Liwagu River; biotope EW-MAL 09-09 is the tributary on the right side.
Garra borneensis, juvenile.
There were plenty of Garra; 3-5 individuals shoaling, permanently foraging on the substrate.
We were crossing Labuk River on Road A4 eastwards. The Labuk River is one of the major watersheds in Sabah.
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EW-MAL 10-09 Telupit River
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Location
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Telupit River on the road Ranau - Telupit, crossing road right - left, 4 km to Telupit, Sungai Labuk basin, Sabah, Borneo, Malaysia
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GPS coordinates
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98 m asl, N 05º 37’, E117º 06'
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Date
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2009-06-04
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Time
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11:30
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Biotope
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Stream with slow current, canopy coverage 30%, max 30 m, 1.2 m deep, riffle section 0.3 deep, no vascular water plants, sand, pebbles, boulders, leaf litter, wood, clear water.
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Parameters
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Temperature
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29
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ºC
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pH
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7.6
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pH
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Conductivity (EC)
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80
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µS/cm
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Hardness General
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ºGH
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Hardness Carbonate
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ºKH
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Nitrite
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mg/l
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Total Dissolved Solution (TDS)
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40
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ppm
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Species
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Nemacheilus elegantissimus Chin & Samat, 1992
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plenty in shoals, 10 m in front of the riffles, at 50 cm depth
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Rasbora sumatrana (Bleeker, 1852)
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plenty
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Gastromyzon introrsus Tan, 2006
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few, 10 m in front of the riffles
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Remarks
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Gastromyzon bite marks on the boulders
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Water temperature measured in 30 cm depth
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Biotope EW-MAL 10-09 is a tributary to the Labuk River.
This is a remarkable balitorid (Gastromyzon) biotope, since it is not even 100 m asl, and has slow current, water temperature at about 29 ºC measured at 30 cm depth. It also has drift wood, which is actually not a feature of a Gastromyzon habitat.
We saw shoals of up tp 10 specimen of Rasbora sumatrana in the upper stratum.
Nemacheilus elegantissimus occurs in shoals of up to 4 specimen; never singly.
We were crossing Sugut River on Road R1 heading further westward.
This batch of Pseudolais tubbi was also for sale on the market. This species was originally described from the confluence of Deramakot River and Kinabatangan River, Sabah, Borneo.
Gastromyzon introrsus occurs in the Pedas River and Labuk River basins. There might be a kind of river piracy in the past which allowed the fishes to migrate from one basin into the other.
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Copyright © 2004-2010 Marco Endruweit. All rights reserved. Email: me(at)aquariophil(dot)org - replace antispam precaution This website is optimized for 1024 x 768 screen resolution and best viewed with MS IE 6.0 or superior. Pop-ups should be enabled; allow active content such as scripts and ActiveX. Although it is regularly improved and updated it might contain doubtful, obsolete or wrong information. Your critic review can improve this site. Please fell free to let me know. Last update: 2010-07-06 www.aquariophil.org can be cited as: Endruweit, M. (ed) 2010: Aquariophil. - World Wide Web electronic publication, www.aquariophil.org, accessed on xxxx-xx-xx (yr-mt-dy)
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