Apistogramma uaupesi

Apistogramma uaupesi (A 156) is a very attractive and rather demanding dwarf cichlid. They are found in very soft acid waters in the Rio Negro system and often require these conditions in the aquarium. A. uaupesi can be delicate and are recommended for experienced Apisto keepers.

This is a rewrite and revision of an article I originally published more than 15 years ago and at that time the fish pictured were accepted as A. uaupesi. However, since then species identification has become so muddled that this could be any of several species. Since I don’t have a catch location, it’s impossible to tell the exact species. I’ve debated what name to use in this article and decided to use the name I used when I originally published. Don’t use this page for identification. If you have a catch location you can possibly ID your fish but without the catch location, you’ll never know for sure. Although the species name may be suspect, the following information is generally applicable to all of the related species.

Apistogramma uaupesi general information

What is an A. uaupesi? This is a great question that we don’t have the full answer to. A. uaupesi is readily recognized and there is no doubt about its status. However, there are at least six similar-looking species or forms and there is no sure way to classify and properly name these forms. They may all be unique species or they could be color forms of A. uaupesi. There are photos of some of these forms in DATZ South American Dwarf Cichlids and others can be found online. Only extensive field and genetic studies will help to clear up the confusion.

In the meantime, wild imports of A. uaupesi-type fish arrive on a regular basis. Often these are A. uaupesi but similar-looking species are not uncommon. People occasionally post on help forums looking for ID assistance. Fortunately, there are experts who are happy to help.

A. uaupesi are often sold as A. sp. “Rotkeil” or A. sp. “Red-wedge” which is the name they were given when they were first introduced to the hobby. They are in the A. iniridae group which is in the A. pertensis lineage. Like A. iniridae and A. pertensis, A. uaupesi are long and slender-bodied with a high smooth sail-like dorsal fin. Males exhibit a lyrate caudal fin (tail) while the tail is rounded in A. iniridae and A. pertensis. Often there will be a red-colored wedge-shaped patch in the center of the tail. However, this is variable from fish to fish.

Apistogramma uaupesi in the wild

Like all members of the A. iniridae group, A. uaupesi originates from very soft acid waters in the upper Rio Negro in Brazil and in tributaries of the upper Río Orinoco in Colombia and Venezuela. Collectors report typical hardness values of less than 1 dGH and pH values that range from 5.5 to as low as 3.8.

Römer has written extensively about his experiences observing A. uaupesi in the wild. He reports that in addition to being in leaf litter and overhanging vegetation, they will be found along rocky shorelines and even over open sand bottoms. He also reports that, at times, large schools form that may migrate together.

A. uaupesi aquarium care

Aquarium care for A. uaupesi is the same as for all Apistos. Provide them a complex habitat with lots of cover, good quality water, and good food and they should thrive. They can be kept in neutral water but for successful reproduction, they require conditions matching their native waters. In my experience, they do great in pairs. Often there is some aggression until a pair first spawns but after that I usually find them to be compatible. However, every fish is an individual so don’t be surprised if your experience is different.

Apistogramma uaupesi are very expressive in terms of body contortions and displays. The males can very quickly flick their fins into a variety of different positions. It’s often assumed that the very large sail-like dorsal fin is displayed in aggression to make the fish look larger to a challenger. While this might be generally true, with this species I find that the dorsal is not always fully extended in a threat or aggression posture. However, they will often flick it open and closed when displaying.

Breeding Apistogramma uaupesi

Breeding A. uaupesi is much the same as with other Apistos. Give them a complex habitat with multiple potential spawning sites (typically caves) and a sand substrate. Feed them well and give them frequent water changes. Under good conditions, the female will fill with eggs, select a spawning site, invite the male to join her, and lay a clutch of red-colored eggs.

After spawning, the female takes sole care of the eggs which hatch in about 2 days at which time the female gathers the larval fry into a pile on the bottom of her cave. After about another week she will emerge leading her school of tiny babies. Feed them well, give them regular water changes and they grow fairly rapidly. Generally, I’ve found them to be relatively peaceful and have been able to raise spawns from fry to adults in the breeding tank without any significant problems.

Unfortunately, unsuccessful spawns are very common. Usually, this is a result of water parameters that aren’t adequate for egg development. Remember that wild-caught A. uaupesi are coming from waters that can be very soft and acid and it’s often necessary to provide these conditions to achieve spawning success. pH is often the problem as values of 4.0 or even lower may be necessary for success. Of course, it’s really difficult to keep the water stable in these conditions. I’ve had spawns succeed in the low 5 range but I’ve also had to get the pH below 4.0 to achieve success.

Where to buy Apistogramma uaupesi

A. uaupesi are not common fish but they are available at times. They are almost always wild-caught and tank-raised specimens are uncommon. A uaupesi are often sold as A. sp. “rotkeil” and fish sold as such are usually A. uaupesi. However, as already discussed, there are a number of similar-looking forms or species which can confuse the identification. (note: all of the similar species I’ve seen photos of are very attractive so if you end up with one of these other forms congratulations on securing an even rarer species!)

It’s highly unlikely you will ever find A. uaupesi in a pet store. If you have a really great shop they can look into ordering them for you but your best bet will be to search for them online. The Apisto specialist online fish sellers will bring them in from time to time so keep your eye on the various sites and reach out to suppliers to let them know you are interested. It might take some time but you will be able to find them at some point. Most likely you’ll have to pay a premium price for these rarities. Read more in our article on Where and How to Buy Apistogrammas.

Essential Articles About Apistogrammas
The Genus Apistogramma
Apistogramma Aquarium Care
Breeding Apistogrammas
Understanding Apistogramma Classification and Identification
Live Plants in the Apistogramma Aquarium
How and Where to Buy Apistogrammas and Other Dwarf Cichlids