Umbrella Dwarf Cichlid — Apistogramma borellii: Habitat and Care

An adult male typically combines a yellow head and throat with blue iridescence and broad, spreading fins. The rounded tail and high connected dorsal give a different impression from the tall individual front spines of a cockatoo dwarf cichlid. Females are smaller and less expansive in their fins; breeding colour can be strongly yellow with dark markings. Do not sex an immature fish from brightness alone.

The valid name has two final letters i: Apistogramma borellii. Heterogramma borellii is the original combination, and reitzigi and aequipinnis occur in older literature. Opal is a trade colour label, not proof of a collection locality. Buy from an identifiable source and retain its supplied name; an attractive blue fish sold as a generic apisto may belong to another species.

Recorded populations occur in the Paraguay and lower Paraná drainage region of southern South America. This is a more seasonal setting than a permanently hot equatorial aquarium. Marginal vegetation, shallow cover and changes in weather matter when interpreting its habitat. Neither a brown-water photograph nor the word South America establishes one temperature for all dwarf cichlids.

Seriously Fish gives 20–26°C, while Aquarium Glaser describes a cooler annual phase for Paraguayan fish. Around 22–24°C is a useful everyday starting choice for established captive stock. Do not engineer a sudden cold spell or assume a British unheated room is suitable all year. Measure the actual minimum and maximum; use a heater where necessary and prevent summer overheating rather than running permanently near ram temperatures.

Published guidance spans pH 5–8 and 1–15°dGH, with important differences between origins. For ordinary captive stock, a measured plan around pH 6.0–7.5 and 3–12°dGH sits within that guidance without making either extreme a target. These are care choices, not survival limits. The institutional risk summary also cites older, harder-water aquarium recommendations; that does not justify suddenly changing a fish’s settled conditions.

Measure source and aquarium water, including KH, before deciding whether adjustment is needed. Prepare replacement water consistently and avoid repeatedly adding acid to the stocked tank. Mature filtration and gentle circulation should keep the lower zones usable while renewing the surface. Base partial water changes on measured waste and actual feeding, rather than using the species’ flexibility to postpone maintenance.

Offer suitably small complete sinking foods alongside varied live or frozen invertebrates. Place food in more than one accessible patch and watch each fish take it. A fish waiting beneath cover may need a quieter delivery point rather than a larger broadcast meal. Adjust particle size if food is repeatedly mouthed and dropped.

Remove accumulating leftovers from shelter entrances and under dense leaf piles. Incidental organisms on mature wood and leaves provide browsing opportunities, not a dependable complete diet. Appetite is also social information: if one fish stops feeding, look for blocking or chasing as well as checking temperature, ammonia and nitrite. Do not respond automatically with medication or an extra handful of botanicals.

If the fish accepts prepared sinking food, Artemia SuperSoft Fish Food is a soft-food option to compare with the ration above. This listing is the 1.4–2.2 mm grade: use it only where the actual fish can swallow the pieces readily, and keep portions accessible to quieter individuals.

Peaceful small upper-water fish can be considered when their temperature, water and feeding requirements overlap. Evaluate their adult size and behaviour, not only how they look in the shop. Warm-water specialists are poor choices if keeping them would force borellii into permanent high heat. The ram profile is a comparison, not a recommendation to mix the two.

Other bottom-dwelling cichlids can remove the retreat space that made the arrangement work. Small shrimp and fry may be eaten, and even calm catfish can intrude at a defended shelter. During breeding, reassess the floor as a territory rather than assuming the previous community remains safe. Keep escape routes and a separation option available.

Eggs are generally attached within a sheltered cavity, with the female providing most care. A compatible pair and suitable water may spawn without dramatic manipulation. Glaser reports occasional male participation, but do not depend on shared care: a defending female can also drive the male away. Watch their actual access to food and refuge.

If raising young is the goal, prepare a quiet mature set-up, protected filter intake and small live first foods before spawning. Newly free-swimming fry need food within reach, such as suitable Artemia nauplii or microworms, with careful removal of surplus. A larger grow-out plan is needed as young become independent. Do not impose a cold season, heating spike or additive dose as a guaranteed breeding trigger.

Start with temperature and social pressure. A fish constantly exposed to heat, a tankmate patrolling every exit or a blocked food route can make a beautiful aquarium function poorly. Observe before feeding and again after it; this often reveals a subordinate fish that is otherwise missed.

Check measured water quality, filter flow, recent changes and actual intake before altering several things at once. Keep the useful structure while removing waste; replacing all litter and rearranging every territory simultaneously makes the response harder to interpret. Botanicals support layout and browsing, but they do not guarantee health or repair an unsuitable stocking plan.