Rhinogobius Chiengmaiensis

Datasheet

Behaviour:

The Chiangmai Stream Goby can be kept in a community tank if tankmates are chosen carefully. They are peaceful, pelagic species that do well with tankmates such as Tanichthys or Danio species. It is not advisable to mix them with other Rhinogobius spp. due to potential hybridization concerns. However, other stream-dwelling gobies from genera like Stiphodon, Sicyopterus, Sicyopus, or Schismatogobius make suitable companions. Large fishes should generally be avoided, but in very large setups, non-predatory surface-dwelling fish may be added. The majority of cichlids and territorial fishes in the lower tank levels should be avoided. While males can be territorial with each other, serious damage is unlikely with sufficient cover; they actually require the presence of conspecifics to thrive. It is recommended to have at least two males and multiple females to prevent the fish from becoming listless and inactive.

Feeding and Diet:

Rhinogobius Chiengmaiensis are opportunistic carnivores that feed on small invertebrates, crustaceans, and similar prey in their natural habitat. In captivity, they should be offered small live or frozen foods like chironomid (bloodworm) or mosquito larvae, Artemia, Daphnia, and Mysis. While dried foods may be accepted after acclimatization, they should not be the sole diet.

Reproduction & Dimorphism:

In the wild, reproduction occurs seasonally, but in aquariums, breeding can happen year-round. Male Chiangmai Stream Gobies guard the eggs deposited on the ceiling of caves or crevices until hatching. Spawning occurs secretly within the cave, and the female is usually ejected once spawning is complete. The male cares for the eggs and fry, which hatch with a large yolk sac attached. Adult males are more vibrant in color and develop slightly longer dorsal and anal fins compared to females.

Habitat and Distribution:

Chiangmai Stream Gobies inhabit smaller rivers, tributaries, and streams with substrates of gravel, rocks, boulders, and exposed bedrock. Aquatic plants are not typically found in their natural habitat, but there may be dense riparian and overhanging vegetation. They are known only from the middle-and-upper Chao Phraya river system in central Thailand, including the Ping and Nan rivers. The type locality of Rhinogobius Chiengmaiensis is in Chiang Mai, northern Thailand.

Aquarium Setup:

To maintain Rhinogobius Chiengmaiensis successfully, simulate a flowing stream environment in the aquarium. Use variably-sized rocks, sand, fine gravel, and water-worn boulders as substrate. Driftwood branches, terracotta pipes, and plant pots can be added to create hiding spots and broken lines of sight. While most aquatic plants do not thrive in such conditions, hardy options like Microsorum, Bolbitis, or Anubias spp. can be attached to the decor. Clean water with proper oxygen levels is crucial, so consider weekly water changes and use filtration and aeration as needed.

Water Conditions:

• Hardness: 36-268 ppm
• pH: 6.0-8.0
• Temperature: 18-26°C