Rainbow Stiphodon Care
Stiphodon ornatus
The rainbow stiphodon (Stiphodon ornatus) is a specialized grazer of algae and biofilm in flowing tropical streams. In aquaria it needs a mature, stable system with oxygen-rich water, strong movement and algae-covered stones. A newly set-up tank usually lacks the food supply on which this goby depends. Trade names are not always reliable: fish sold as “rainbow” or “gold” may include related species. Check identification and body condition before choosing an animal. Confirm before purchase that the tank has abundant growth on its stones and a fully secure cover.
Plan your aquarium →At a glance
- Temperature
- 20–28 °C
- pH
- 6.5–7.5
- GH
- 2–12 °dGH
- Aquarium length
- At least 80 cm
- Minimum aquarium volume
- At least 72 L
- Adult size
- Up to 7 cm
- Group size
- At least 2 individuals
- Temperament
- Peaceful
About this species
Stiphodon ornatus is a sicydiine goby in Gobiidae. Its colourful males have led to trade names such as rainbow stiphodon and gold cheek. Seriously Fish warns that the identity of fish sold under these names was historically unclear and that similar species may be involved. A trade label alone is therefore not reliable identification.
Natural habitat
These gobies are adapted to flowing, oxygen-rich streams and graze algae and associated microorganisms from hard surfaces. In aquaria, mature biofilm on stones and stable oxygenation matter more than a sterile layout. Allow grazing surfaces to develop and do not clean them all at once.
Aquarium and layout
The specialist source gives a 80 × 30 cm footprint and about 72 litres for a pair or small group. More space is needed for several males or species. Use smooth stones, mature biofilm, strong but manageable flow and good oxygenation. Bright light supports algal growth. Place heavy stones directly on the tank base or a stable support because digging can undermine them. Secure the lid: Stiphodon can climb glass and jump.
Water conditions
Seriously Fish gives 20–28 °C, pH 6.5–7.5 and 2–12 dGH. Keep water clean, stable and highly oxygenated. Increase surface agitation at higher temperatures. Do not add the species to an immature aquarium or make abrupt changes.
Behaviour and group size
This species can live with carefully chosen peaceful stream fishes, but males may be territorial. Give bottom territories visual barriers and enough room. Avoid aggressive bottom-dwellers and fast food competitors. A tight-fitting lid is essential because the fish climbs and jumps. Be cautious with rainbow and gold trade labels because a related species may be involved.
Feeding
Stiphodon ornatus grazes benthic algae and the biofilm organisms on it. A mature tank with plentiful growth on stones and other surfaces is essential for long-term success. Some sinking dry foods and small animal foods may be accepted, but only occasionally; they do not replace grazing. Check body condition before purchase because severely emaciated fish can be difficult to restore.
Breeding
The specialist source reviewed does not provide a reliable simple home-breeding method. Sicydiine gobies have a life cycle involving marine larval development, so home breeding should not be presented as routine. Focus care on stable flow, oxygen and a continuing biofilm supply.
Sources & review
This care guide draws on several specialist sources and was last checked on .