Fundulopanchax gardneri lacustris (Radda 1974)

Lake Ejagham. Photo courtesy of Ed Pürzl.

Meaning of Name

After lacustris meaning to come from the lake (Ejagham).

First Description

Radda A.C. 1974 (Aphyosemion gardneri lacustre).

Studien zur Cytogenetik, Taxonomie und Verbreitung der 'Gardneri-Gruppe' der Gattung Aphyosemion (Osteichthyes: Cyprinodontidae) aus dem südlichen Westkamerun.

Jahrbuch des Naturhistorisches Museum der Stadt Bern 5: p 4-6. figure 1B, 3.

Size

54 mm (according to first description).

Meristics

D = 15-16, A = 15-17, D/A = +3-4, ll = 31-32 +2-3 (Radda 1974)

Karyotype
  • Male 2n = 37 (Radda 1974)
  • Female 2n = 39 (Radda 1974)
Sub-Genus

Paraphyosemion

Group

gardneri

Synonyms
  • Aphyosemion gardneri subspecies No.2 Radda 1973
  • Aphyosemion gardneri lacustre Wright 1973 (nomen nudum)
  • Aphyosemion gardneri lacustre Radda 1974
  • Aphyosemion obuduense lacustre Kottelat 1976
  • Aphyosemion lacustre Huber 1977
  • Fundulopanchax gardneri lacustris Lazara 1984
  • Aphyosemion (Paraphyosemion) gardneri lacustre Huber 1994
  • Aphyosemion gardneri (Cameroon). (From a BKA I/P).
Populations

This form circulated in the BKA early 1980's but proved difficult to breed.

C 89 / 5
Photo taken by kind permission from Werner Eigelshofen's site.

This photo taken by Bob Heap about 1976 showing the form introduced into the BKA as Aphyosemion gardneri 'Cameroon'
BKA Photo
Type Locality

An outlet of Lake Ejagham near Eyoumojok in the Ossidinge area.They were found in small pools of a drying tributary.

Distribution

Restricted to the area of Lake Ejagham, western Cameroon.

Habitat

Small pools, streams & brooks originating from Lake Ejagham. Some of these pools are most likely to be seasonal.

Nevin Aspinwall of the AKA put the following message on the AKA newsgroup 17th December 2002...
'I collected fish in Lake Barombi in 1998. It is basically a crater lake with very clear water. You can see lots of cichlids in the open water of the lake. In and amongst the roots on the
shoreline and in the outflowing stream we collected lots of Fp. gardneri lacustris, the only place where they are found'.

Distinguishing CharacteristicsEasily distinguished from other gardneri forms. The basic body colouration is green. The red spots on the body are small & are arranged in broken lines. This is perhaps the least colourful of all gardneri forms.
Colour/Pattern VariabilityLow.
History

Found in 1970 by A.C.Radda in pools of a drying outlet of Lake Ejagham.

Breeding Notes

This is perhaps the most difficult of all the gardneri sub-species to breed. Some reports suggest that this type is best spawned in cool water while others suggest that they only spawn at certain times of the year. I must admit defeat with this one, having tried many years ago. All attempts to spawn them ended in defeat & I decided to pass them on to a fellow killie keeper to see if they would do better in his water.
Reports suggest that two forms have been known to be in the hobby, a blue form which was found to be easier to breed, & a green form which proved more difficult. The form circulating in the BKA during the early '80's did have a green body colouration as can be seen in the photo at the top of this page.

They are regarded as more of an annual than most 'gardneri' with eggs taking 4 weeks of semi-dry storage to hatch. Fred Wright observed that most of those hatching in this period were observed to be males in BKA newsletter No.100, December 1973. It was noted that if this peat was left submerged in water for a further period the hatching fry turned out to be mostly females.

Alan Green bred this subsp. in the '80's in 2' (60 cm) deep tanks but had few eggs. Water temperature approx. 73°F.

Diameter of Egg1.3 mm
Remarks