Apistogramma alacrina
Redspot Dwarf Cichlid, Rotpunkt Zwergbuntbarsch (DE)
Etymology
Apistogramma: etymology not explained. Presumably from the Greek ápistos (Gr. άπιστος), meaning ‘unbelieving, doubtful’, and grámma (Gr. γράμμα), meaning ‘that which is drawn or written’, in reference to the variably-developed, often rudimentary, lateral lines in member species.
alacrina: from the Latin ala, in this case meaning ‘axilla (armpit)’, and crinis, meaning ‘hair’, in reference to the dark pigmentation on the pectoral-fin base in this species.
Classification
Order: Perciformes Family: Cichlidae
Distribution
Described from the Río Ariari within the Río Guaviare drainage, Meta Department, central Colombia, the Guaviare forming part of the much larger Río Orinoco system. It’s also known from the Río Orteguaza in neighbouring Caquetá Department, an affluent of the Río Caquetá in the Amazon basin.
Habitat
Likely to inhabit slower-moving tributaries, backwaters and creeks in areas where fallen leaf litter collects with the type locality a roadside pool.
Maximum Standard Length
Aquarium SizeTop ↑
Base dimensions of 45 ∗ 30 cm or more are acceptable for a single pair with a group requiring larger quarters.
Maintenance
Provided adequate cover and structure is available this species is unfussy with regards to décor with ceramic flowerpots, lengths of plastic piping and other artificial materials all useful additions. A more natural-looking arrangement might consist of a soft, sandy substrate with wood roots and branches placed such a way that plenty of shady spots and caves are formed.
The addition of dried leaf litter (beech, oak or Ketapang almond leaves are all suitable) would further emphasise the natural feel and with it bring the growth of beneficial microbe colonies as decomposition occurs. These can provide a valuable secondary food source for fry, while the tannins and other chemicals released by the decaying leaves aid in simulation of naturalistic conditions. Leaves can be left in the tank to break down fully or removed and replaced every few weeks. A net bag filled with aquarium-safe peat can also be added to the filter or suspended over the edge of thetank.
Fairly dim lighting is recommended and plant species from genera such as Microsorum, Taxiphyllum, Cryptocoryne and Anubias are best since they will grow under such conditions. A few patches of floating vegetation to diffuse the light even further may also prove effective. Filtration, or at least water flow, should not be very strong and very large water changes are best avoided with 10-15% weekly adequate provided the tank is lightly-stocked.
Water Conditions
Temperature: 23 – 29 °C
pH: 4.0 – 7.0
Hardness: 0 – 143 ppm
Diet
Apistogramma spp. are chiefly carnivorous and feed mostly on benthic invertebrates in nature. In the aquarium live and frozen foods such as Artemia, Daphnia and chironomid larvae (bloodworm) should be offered regularly although most species will also learn to accept dried alternatives with pelleted products generally preferred to flake.
Behaviour and CompatibilityTop ↑
Best maintained alone or with small ‘dither’ fishes such as Nannostomus spp., and ideally should not be mixed with other Apistogramma.
Sexual Dimorphism
Males are larger, more colourful and develop more extended fins than females.
Reproduction
Substrate spawner which normally lays its eggs in crevices or cavities among the décor. The female is mostly responsible for post-spawning care of eggs and fry and in smaller aquaria the male may need to be removed as she may become hyper-aggressive.
While spawning this species is not difficult under the correct conditions, raising the fry during the early weeks of life may present difficulties since they’re highly sensitive to changes in water chemistry. Successful breeders tend to recommend feeding several small meals daily and performing regular, but never large, partial water changes.
NotesTop ↑
This species differs from all other described members of the genus by the presence of dark blotches at the dorsal and ventral base of the pectoral fins. Three very similar-looking fishes have been assigned the codes A106, A107 and A108 under the DATZ system and are also known in the aquarium hobby as A. sp. ‘rotpunkt’ (this form has been in the hobby for decades with its precise origin unclear), A. sp. ‘rotpunkt Orteguazas’ (the paratype form of A. alacrina) and A. sp. ‘rotpunkt Guayas’, respectively. It remains to be seen whether they’re conspecific with A. alacrina or not since they exhibit some differences in colour pattern and morphology.
Apistogramma is among the most speciose of South American cichlid genera with around 70 species valid at present but many more awaiting description. In addition many species exist in two or more geographical colour forms which may or may not turn out to be distinct in the future. Hobbyists tend to label these with collection data if available in order to avoid mixing them and the potential of hybridisation.
Member species have also been organised into a series of species lineages, complexes and groups by authors in order to better separate them. Such lists have been augmented by fish that have appeared in the aquarium trade and are in a state of near-constant flux. For example the A. elizabethae group is contained within the A. agassizi sublineage of the larger A. trifasciata lineage alongside the A. gibbiceps, A. bitaeniata, A. agassizi and A. diplotaenia groups.
Kullander (1998) conducted a morphology-based phylogenetic study in which the neotropical family Cichlidae was divided into six subfamilies of which the putative subfamily Geophaginae contained 16 genera divided among three ‘tribes’:
Acarichthyini – Acarichthys and Guianacara.
Crenicaratini – Biotoecus, Crenicara, Dicrossus and Mazarunia.
Geophagini – Geophagus, Mikrogeophagus, ‘Geophagus‘ brasiliensis group, ‘Geophagus‘ steindachneri group,Gymnogeophagus, Satanoperca, Biotodoma, Apistogramma, Apistogrammoides and Taeniacara.
Later molecular studies by Farias et al. (1999, 2000, 2001) resulted in the additions of Crenicichla and Teleocichla to the Geophaginae, a result supported by López-Fernández et al. (2005) who conducted the most detailed molecular analysis of the grouping to date including 16 of the 18 genera and 30 species. However their conclusions regarding interrelationships between genera did vary somewhat from previous hypotheses and can be summarised by the following loosely-defined groups:
- a weakly-supported sister group relationship between Acarichthys and Guianacara.
- a well-supported “Satanoperca clade” comprising Satanoperca, Apistogramma, Apistogrammoides and Taeniacara.
- a “big clade” with Geophagus, Mikrogeophagus, ‘Geophagus‘ brasiliensis group, ‘Geophagus‘ steindachneri group,Gymnogeophagus, Biotodoma, Crenicara and Dicrossus.
- a “crenicarine clade” with Biotoecus and Crenicichla.
No representatives of Teleocichla or Mazarunia were included in the study but the former is well-established as sisterto Crenicichla while the latter has grouped closely with Dicrossus and Crenicara in earlier works. The other main conclusions of the paper are confirmation that Geophaginae is a monophyletic group exhibiting strong signs of having undergone rapid adaptive radiation (diversification of a species or single ancestral type into several forms that are each adaptively specialised to a specific environmental niche).
