bam Very demanding level

Marinjung bridge, Sungai Cimaja, Sukabumi, Indonesia

Sponsored by

Indonesia, Jawa Barat, Sukabumi

The making of this Biotope Aquarium Model is based on the main data from the Indonesian Institute of Sciences (LIPI) research entitled “FISH FAUNA IN GUNUNG HALIMUN NATIONAL PARK AND THE ADJACENT AREA, 2001” and specializes in making goby aquarium models in the Cimaja River closest to the estuary.

Cimaja River is one of the rivers that flows from Mount Halimun National Park to the Indian Ocean. The southern region of Mount Halimun National Park is a unique and very specific area. This area was formed from the geological process “Bayah Dome”, which makes this river seem to have no access to other freshwater rivers on the island of Java. Therefore, this river is inhabited by the amphidromus goby species.

This particular  biotope aquarium is focusing on the area near the Marinjung bridge only, according to the fact that the goby fish in the Sungai Cimaja occupy different territories with different water parameters. That is why, for example, I did not place the Sicyopterus lagocephalus and Sicyopterus macrostetolepis species in the tank – because even though they live in the same stream, these big-headed Sicyopterus live attached to the deeper rapids.
In the Cimaja river I also found Lentipes ikeae, Sicyopus rubicundus and Sicyopus exallisquamulus but they live in the upper Cimaja river with lower water temperatures. So I tryed to re-create the exact spot under the Marinjung bridge in order to show this precise location and to  contribute to knowledge about Nature, according to the purpose of the biotope aquarium.
Submitted by
Margo Prasetya
Approved by
Greg Martin & Peter Unmack
-6.9525447, 106.4818420
Geographical region
Southeastern Asia
Drainage Basin
Bayah Dome River
River catchment
Mount Halimun National Park
Water body type
Water body name
Sungai Cimaja
Water body part
Open water
Water body course
Lower course
Water body: tributary of
Tributary name
Sungai Cimaja

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Clear water
Water transparency
Concentration of sediments
Water temperature
25-27 °C
Water flow/curent

Chemical parameters

100 mg/l
90 mg/l
Dissolved Oxygen

Aquarium information

Aquarium description

Set-up date
Aquarium decoration

Round river rocks, river pebbles, and river sand are very similar to those in the natural habitat. Sedimentary rocks similar to a riverbank. The roots of the bush plants that are installed seem to be washed away.

Aquarium equipment
  • Gutter filter filled with sponge and synthetic cotton;
  • Pump engine: “Yukari” 1800, 1600 L/H, 20 Watt;
  • Wave Maker Recent AA WM 24000, 24000 L/H, 25 Watt for use once a week once a day, fast water mode;
  • Wave Maker Amara AA 8710, 3000 L/H, 6 Watt for daily use;
  • Kandila S Series lamp, 10,000 K, RGB, 25 watts, for the front;
  • Kandila S Series lamp, 10,000 K, RGB, 21.5 watts, for the back;
  • Spotlight Krisbow 25 watt used for the effect of sunlight.
Fish care

The fish are fed daily: in the morning 1 teaspoon of pellets sink ( not all pellets are liked, my fish prefer pellets for ornamental shrimp food), in the afternoon a cube of frozen blood worms.

Fish: 4 Sicyopterus micrurus and 7 S. microcephalus, 12 Schismatogobius marmoratus, 11 Stiphodon elegans var. Java.

Plant care
Water care

Every 3 days I change 20% of the water. Synthetic cotton washing once a week.


100 cm
60 cm
40 cm
200 L

Substrate in aquarium

Stone form
Submerged terrestrial vegetation

Comment by the expert

Greg Martin: A first class biotope aquarium and a beautifully reproduced biotope.

Peter Unmack: Nice biotope, good job on the habitat details, seemed like a good group of happy active fishes!