Aphyosemion elberti (Ahl 1924)
Photo courtesy of Ed Purzl.
|Meaning of Name||
After the original collector - Dr. S. Elbert.
Über neue afrikanische Zahnkarpfen der Gattung Panchax.
Zoologischer Anzeiger. 60 (3-4) 309-310.
4 cm (Radda & Pürzl 1987)
n = 19-20, A = 33-34 (Scheel 1968). Variable between different populations.
Wildekamp in 'World of Killies' also places Aphyosemion bualanum kekemense Radda & Scheel 1975 & Aphyosemion kekemense Huber 1977 as synonyms. As this reference library follows Huber's listings I have put it in as a valid sp. until the situation changes.
Bamendjina - Brighter coloured than N'dop
. Blue is stronger with pectorals deeper orange. Shape of dorsal &
anal appears to be different (both narrower at the base & more open
at the outer edges) according to P.Lakermi in BKA newsletter No.278
Bamkin - Scheel collected these & took some back to Copenhagen for study.
Batibo - Located 20 miles south of the 6° line of latitude in the northern part or the High Western Plateau. On the western edge of known distribution for the species. This area is 25 miles west of Bamenda. This is a blue-green population with no yellow in any fin.
Diang - 40kms
west of Bértoua on the Nanga - Eboko road.
P.Lakermi in BKA newsletter No.278 (October 1988) reported that this
population lacked spectacular fin extensions in young fish. These develop
in older fish.
About 20 kms seperate this population from Foumban. Considered by P.Lakermi
in BKA newsletter No.278 (October 1988) to be the most intense blue
coloured population. Vertical red bands are narrow & few in number.
A noticeable red mark was observed at the base of the caudal (in one
specimen). The dorsal was reportedly less spotted than other populations.
GKCAR 90/26 -
GKC 90/2 -
Ibaikak (Ibaykak) - Situated on the road
going east from Sakbyémé on the Axe Lourd road from Edéa
to Pouma. Turn north in the direction of Ngambé. Immediately
after Sakbayémé a bridge crosses the Sanaga River. After
this bridge a road leads to Kahn (Kan). Ibaikak is a further 26kms on.
This is 7km as the crow flies from the banks of the Sanaga River.
Jakiri - Near Mt.Oku. Many biotopes in this area are in the drainage leading to Lake Barmendjing. Adult fish have reportedly large fins & develop long fin extensions.
Koupa Matapit - Stan Langdon put an article
in BKA newsletter No.177, May 1980. P.Lakermi in BKA newsletter No.278
(October 1988) reported that this population was similar to Bamendjina
but stockier & darker. This population is one of the larger of the
sp. measuring 50-60mm. The author collected 80 fry from the parents
tank on their death.
Mambila Plateau - Imported by BKA Species Import in July/August 1974. This was not the first import from this location. They were reportedly collected in fast flowing water.
Ndokayo - A large fish. Found in an area of heavy forest outside the town.
Ndop - Found in high savannah.
Water temperature measured 18°. Considered to have the
longest fin extensions of all the elberti
Japan Gallery. Aquarium strains derive from 1982 (see
CCP 82 ).
- P.Lakermi in BKA newsletter No.278 (October 1988) noted that this
population was distinguished by the shape of the dorsal which appears
very small. The red vertical bands are unique in that they are red spots
which form bands.
N'tui - Found
in an area bordering on rainforest in water measuring 24°C. P.Lakermi
in BKA newsletter No.278 (October 1988) noted that some offspring from
this population showed no yellow colouration. Both forms apparently
are seen in wild collected fish.
Red 'T' -
This is a little confusing. No doubt that 'T' refers to Peter Tirbak
& no doubt they came from Europe into the US. Records in Journals
state Peter Tirbak found a red form of A.elberti
on a trip to Europe in 1977/78 & took them back to the USA where
he added the letter 'T' to keep them seperate from other forms. There
was a rumour in the BKA some years ago that this form & Diang were
the same form. This is not correct as they are completely different.
Yelwa - This population was sent to BKA
Species Control around June/July 1972 from John Hughes who collected
them in a small hamlet called Yelwa which was situated 6 miles to the
south of the town of Maisamari on the Mambila Plateau (Cameroon/Nigeria
border). A large amount were collected (260). The transportation was
not ideal as they were carried by Land Rover all the way to John's home
in Kano which was some 750 miles. The fish were collected at temperatures
around 60°F but conditions on the road pushed this temperature into
80/90°F. Despite all this, some made it & were sent to the UK.
Jade Plateau, Lebo River, western Central African Republic. Originally this location was reported as being eastern Cameroon but the border between these countries has changed over the years. (Scheel 1974).
Central Cameroon extending across the border with Central African Republic. They inhabit the Mbam River drainage in eastern Nigeria & Cameroon, the upper Mambere (Cameroon & Central African Republic) & Sanaga River drainages (central & western Cameroon).
Small streams in open highland grassland savannah.
Ahl based his description on 3 fish collected from the 'Jade Plateau', Lebo-Fluss, eastern Cameroon. This area is located between the western part of the Logone-Mbéré drainage in the western area & the Bahr-Sara-Uam to the east. The southern range of this area reaches the Sanaga & Lobai Rivers. This is a water shed which seperates the Chad, Zaire & Sanaga drainages. These fish were caught by Dr.Elbert.
The BKA received the then named A.rubrifasciatum as an exchange in 1967.
The Diang population was caught by Vlamink in 1971.
John Hughes a collector for the BKA in the early years sent to the UK a population he caught at Yelwa, a small hamlet 6 miles south of a small town called Maisamari on the Mambila Plateau. These were distributed in 1972.
The Mambila population was imported to the UK by the Species Import Commitee in May/June 1973 & the summer of 1974 (July/August). These were collected from fairly fast flowing water.
Matapit entered the BKA probably through Beryl Scates who received them from the DKG around 1978.
History of the synonym Panchax tessmanni Ahl 1924
Ahl described this species from 2 specimens,
one collected at Bosum (Bosoum, 1100 metre altitude)(holotype) in the
Ueam River area & the other in the Momo River which is an affluent
of the Ja (Dja) River, Sangha-Congo drainage (cotype). At the time of
collection both localities were in German Cameroon of 1911 but the type
locality is now within the borders ofCentral African Republic.
History of the synonym Aphyosemion rubrifasciatum Clausen 1963.
Clausen described this sp. from 8 specimens
collected in a swamp situated between Ndop & Bamunko in the Bamenda
Highlands. These were considered to be 'very common' in the grassy terrain.
They were also found in adjoining savannah between the Vuri, Sanaga,
Mbam & Nun Rivers.
Reports would suggest that breeding is a little more difficult than the easier Aphyosemion species. Some populations are easier than others.
I have bred the Mbam, Koupa Matapit, Ntui & Ndop populations in rainwater. Eggs are deposited in floating mops or plants which are taken out & water incubated. These take about 12-14 days to hatch but can go to 20 days. Fry are large enough to take newly hatched brine shrimp as a first food. Growth rate seems very slow & it can take about 8 months for them to reach sexual maturity.
Maurice Nicholson reported first signs of sexing out is at 6 months where the vertical lines start to show through, shortly after the caudal fin starts to show colour. He reported that the fish need to be 9 months old before they start to spawn. 25% water changes were done weekly.
Stan Langdon kept eggs in preboiled tapwater with a DH of 6-11 & a pH of 7 - 7·5. He had great success in keeping eggs alive.
P.Lakermi in BKA newsletter No.278 (October 1988)
reports that eggs will stand a dry storage period of 17-26 days. Also,
he reports young fish to be extremely susceptible to high levels of
Peter Parry in BKA Newsletter No.331, April 1993
reported them easily bred in water of 68 - 72°F, slightly acid.
Males were observed to fight in courtship but didn't harm females. Males
can drive females hard. Fish spawned best in peat fibre, Java moss &
the roots of plants.
|Diameter of Egg||1.2 - 1·5mm|
It was reported in 1993 that the N'tui population was no longer found in the wild due to deforestation.