Christmas Fulu (Xystichromis phytophagus) Care Guide
Xystichromis phytophagus, the Christmas fulu, is a herbivorous Lake Victoria haplochromine. It is a maternal mouthbrooder and a popular conservation strain.
Compiled by Aquairi from published sources · Published · Updated
Overview
Xystichromis phytophagus, known as the Christmas fulu, is a haplochromine cichlid endemic to Lake Victoria. It was described by Greenwood in 1966 and is also catalogued under Haplochromis phytophagus. Unlike many of its relatives, it is a dedicated plant-eater, and it is among the most widely kept Lake Victoria conservation strains in the hobby.
Taxonomy
- Family: Cichlidae
- Genus: Xystichromis
- Scientific name: Xystichromis phytophagus
- Common synonyms: Haplochromis phytophagus
Habitat
FishBase records the species as endemic to Lake Victoria, a freshwater benthopelagic fish of shallow sandy littoral zones near aquatic vegetation. Its preference for vegetated shallows reflects its largely plant-based diet.
Tank requirements
- Minimum tank volume: 250 L
- Temperature: 24-28 °C (75-82 °F)
- pH: 7.5-8.5
- GH: 10-20 °dGH
- Maximum size: about 8.6 cm SL (FishBase)
- Substrate: sand
- Lifespan: 5-8 years
Diet
The species is herbivorous (phytophagous). FishBase reports gut contents of phanerogam leaf tissue along with epiphytic diatoms and blue-green algae, giving it a low trophic level of 2.0. A vegetable-rich aquarium diet, such as spirulina-based foods, matches its natural feeding.
Compatibility
It is a semi-aggressive, mid-water cichlid suited to robust Victorian haplochromine communities with Astatotilapia and Synodontis catfish. It should be kept away from Lake Malawi Mbuna, Tropheus and gentle fish such as Discus, Apistogramma and other dwarf cichlids.
Breeding
FishBase records the species as a mouthbrooder; the female incubates eggs and fry in her mouth, in line with the wider Haplochromini.
Conservation status
IUCN Red List: Data Deficient (assessed 2010). Lake Victoria haplochromines suffered severe declines after the Nile perch introduction, which underpins their value as captive conservation strains.
Xystichromis phytophagus (Christmas Fulu) Breeding Guide
Overview
Xystichromis phytophagus (described as Haplochromis phytophagus Greenwood, 1966) is a haplochromine cichlid endemic to Lake Victoria. FishBase records it as a mouthbrooder and a herbivore: stomach contents are dominated by fragments of higher-plant leaf tissue along with epiphytic diatoms and blue-green algae, matching the name phytophagus ("plant-eating"). It reaches about 8.6 cm SL and lives in the shallow littoral zone over sandy bottoms near rooted aquatic plants. The IUCN Red List status is Data Deficient.
Sexing
Like other Lake Victoria haplochromines, mature males carry the bright nuptial coloration while females remain plainer, which is the most reliable visual cue once the fish are adult.
Conditioning
As a phytophagous species, it is conditioned on a primarily plant-based diet reflecting its natural intake of plant tissue and algae; FishBase notes it is highly resilient with a minimum population doubling time under 15 months, consistent with its reputation as a readily reproducing fish.
Breeding Setup
It is kept over a sandy bottom with rooted plants and rockwork that mirror its shallow littoral habitat. Because the species is maintained largely through captive breeding for conservation, a stable group in alkaline, hard water typical of Lake Victoria supports reproduction.
Spawning Behavior & Trigger
FishBase classifies the species as a mouthbrooder. In the Victorian haplochromine pattern this is maternal mouthbrooding: the female takes the fertilized eggs into her mouth after spawning over the substrate. Brood-specific figures are not given in the consulted scientific sources and are therefore omitted.
Egg & Fry Care
The female incubates the eggs and larvae in her mouth and continues to shelter the fry there for a period after they hatch, releasing them to forage once they are free-swimming.
Common Challenges
The main concern is conservation rather than difficulty: the species is listed as Data Deficient and is sustained largely through captive-breeding programs, so maintaining genetically diverse, correctly identified lines is important to avoid hybridization with other Victorian haplochromines.