Borneo Tiger Barb

Geographic Origin and Biotope: Endemic to the Kapuas and Mahakam rivers in central and western Borneo (Kalimantan, Indonesia). Inhabits very slow forest streams or swamp pools, usually with dark, tannin-loaded water (blackwater) and very low pH caused by decaying vegetation.

Taxonomy and Morphology: Cyprinidae (genus Puntigrus). Confused for decades with P. tetrazona (Sumatra). Key differences: anchisporus has a 'complete' lateral line (sensory pores reach the tail; in tetrazona they stop halfway), always has 14 scales around the caudal peduncle, and its pelvic fins are ALWAYS intensely red (in tetrazona they are often black or hyaline). Reaches 6 cm (2.4 inches).

Social Behavior: Extremely dynamic and hierarchical. Like all 'Tiger Barbs', it is a notorious fin-nipper. However, this bad reputation is the fault of aquarists: if kept in large schools of 12-15 specimens, the Tiger Barb will focus its frantic aggression internally to establish pecking orders, completely ignoring other species.

Coloration and Sexual Dimorphism: Pale gold/peach base crossed by four massive, sharp vertical black bands. All fins feature deeply saturated fire-red borders or hues, much brighter than their Sumatran cousins. Breeding males have bright red snouts, are slimmer, and show higher contrast. Females are deeper-bodied with pronounced silvery bellies.

Tank Setup: Demands tanks of at least 80 cm (32 inches) in length. Being native to Borneo, it appreciates layouts rich in submerged roots (Manila or Mopani) and Catappa leaves to tint the water amber. Lighting should not be blinding. The aquarium must have a large central swimming space for their frantic sprints.

Feeding and Diet: Insatiable micro-predators. They will voraciously eat before anyone else. They eat anything: bottom pellets, flakes, brine shrimp, and bloodworms. Without live food, they tend to damage soft plants, so supplement with spirulina flakes.

Water Quality: Compared to the bulletproof tetrazona, anchisporus prefers decidedly softer (GH 1-10) and more acidic waters (pH 5.0 - 7.0). The ideal temperature is between 20 and 26°C (68-79°F). It is less tolerant of urban pollutants.

Compatibility and Cohabitation: GOLDEN RULE: No slow-moving fish with long fins (Absolutely NEVER with Betta splendens, Gouramis, Angelfish, Discus, or Guppies). They would be shredded and killed by stress. Should be paired exclusively with robust, fast, short-finned fish: Clown Loaches, Danios, Giant Rasboras, or large Plecos.

Aquarium Reproduction: Highly prolific egg-scatterer. They scatter eggs in the morning among thick bushes of fine-leaved plants (like Java Moss). If an egg-saver grid is not placed on the bottom, the eggs will be devoured by the parents in seconds.

Risks and Diseases: They stress out and succumb to external parasites (Ich) if confined in small schools (under 6 individuals), while also turning into terrorists toward other species.