As aquarium hobbyists, we have likely heard some
discussion of the endangered status or extinction of many species of cichlids
in Lake Victoria. As a mere hobbyist, I
can not presume to add to the knowledge base of what has already been published
by scientists much more knowledgeable than myself. This article is intended to introduce other
aquarium hobbyists to my thoughts and experiences as a Victorian Cichlid
enthusiast.
First,
a little background on the Lake itself.
Lake Victoria is the largest of several lakes in the Victorian
basin. Lake Victoria is the source of
the Nile River. Several rivers feed into
Lake Victoria but only the Nile River flows outward over a waterfall at a
hydroelectric generator in Uganda. The
Nile River flows Northward from Lake Victoria into Lake Kyoga which is
connected to Lake Nawampassa in the rainy season, then west into Lake
Albert. Lake Kanyaboli, the Yala Swamp
and Lake Nabugabo are smaller bodies of water very close to Lake Victoria. There are other lakes in the Victorian basin
such as Lake Kivu, Lake Edward, Lake George and Lake Albert that are north of
Lake Tanganyika. These lakes are
collectively referred to as the Victorian satellite lakes. We generally refer to cichlids from all these
lakes as “Victorians” even though some species such as Astatotilapia aeneocolor or Haplochromis
limax have never lived in Lake Victoria itself.
While
the current situation in Lake Victoria is not the subject of this article, a
brief history is necessary to understand the status of the Victorian cichlids
in the hobby today. The Nile Perch (Lates niloticus)
was introduced into Lake Victoria in the late 1950’s to create a fishing
industry for a population in desperate need of food and employment. This non-indigenous species existed in the
lake for many years before it’s population exploded in the mid 1970’s. Victorian cichlids were first exported around
1978. By 1980, this large piscavore had
decimated many of the open water species in the lake. A commercial fishing industry was created,
population increased around the lake, and many trees were cut down to smoke the
harvested fish. The deforestation
contributed to agricultural runoff and
erosion of silts into the lake. The
increasing human population dumped ever more raw sewage into the lake. The added nutrients caused a boom in algae
growth and the growth of the water hyacinth.
The overpopulation of the water hyacinth on the lake surface blocks the
sunlight and reduces the oxygen (eutrophication) in the water by interfering
with the water surface to air contact.
The once clear water has become murky, making mate recognition more
difficult, and it is thought that some hybridization is occurring. In the late 1980’s the Lake Victoria Species
Survival Program (LV SSP) was formed to preserve a few these cichlids
species. There are currently 16
Victorian species being maintained at 20 zoos/aquariums throughout the United
States. Since the LVSSP now essentially
has multiple generations of tank raised cichlids, the hope of re-introduction
into the lake is becoming much less viable.
Most of the scientific community does not believe that captive bred
cichlids should be reintroduced into Lake Victoria.
Large scale exportation of
Victorians has never occurred, and no export occurred from 1998 through
2006. A few species of wild caught
Victorian cichlids became available in limited quantities recently. These cichlids lived along the shoreline,
either in the rocky zone or in the sandy bottom reed beds, where survival from
predation was more likely. As a general
rule, many Victorians from the shoreline (referred to as Mbipi) are very
similar in temperament and tank maintenance to the Malawi mbuna except that
many of them prefer a slightly meatier diet.
Many hobbyists feel that all the Victorians are extremely aggressive,
but that is simply not true. There is a
wide variation in the temperament of the mbipi in Lake Victoria just as there
is a great deal of variation in the temperament of the mbuna in Lake Malawi.
So
what does all this mean to the average Cichlid enthusiast? Since Lake Victoria is a very young lake,
there has not been as long a period of time for the species to diversify. That not only means that it is difficult at
times to identify what species we have, but it also means that these similar
looking Victorians are much more likely to hybridize in your aquarium. If you are going to be a responsible breeder
of Victorians, then you must be more willing to maintain a limited number of
diverse looking Victorian species in any one tank, or better yet, maintain a
single species tank. It is common for
Victorian keepers to add mbuna to the tank since the diet, water conditions and
temperament are all very similar. I
myself have never heard of a Victorian cross-breeding with a mbuna, although we
all know that anything is possible given the right circumstances. Fortunately, if you know how to maintain an
mbuna tank, then you already know how to maintain a tank with mbipi. A sand substrate is preferred with lots of
rocks for hiding places. Since many
Victorians are insectivores/omnivores there are several species that will do
quite well in planted tanks, especially Vallisneria. The water temperature should
be between 72º F and 78º F with a PH preferably greater than 7.4. A minimum of three females is preferred,
however (unlike mbuna) a second male in the tank seems to offer some
advantages. A dominant male Victorian is
often relentless in his pursuit of a female to breed with. The subdominant male will sometimes act as a
target fish to partially divert the attention of the dominant male from the
constant pursuit of the females. I’ve
found that most of the Victorians I’ve kept have a lifespan of around six
years.
A
very high percentage of Victorians exhibit at least some red coloration. I would imagine that one of the main reasons
that people buy Victorians is to “get the
red” that is lacking in the mbuna.
That often does not work out as well as one might hope. With only a few notable exceptions (Astatotilapia latifasciata and Paralabidochromis sp “rock kribensis”)
most of the Victorian females are a rather bland silver/gray or dull
yellow/brown. If you ever mix the
females of many species, you may never be able to reliably separate them again. If you don’t maintain the dull looking
females, then there is a good chance you may never see much color in your
males. Many times, only the one dominant
male in the tank will show good color and the subdominant males will look very
similar to the dull colored females. And
if your Victorians are housed with another more dominant species, then you
might never see the full color potential of any of the Victorians in that
tank. If you plan to keep Victorians,
then you also need to carefully plan all the tank inhabitants, or you may be
disappointed in the results. Your fish
may never even remotely appear like the stunning pictures of dominant male
Victorians in full breeding dress you find on the Internet.
Most experienced hobbyists
want to have a definite identification of the species in their tanks, and they
also want to know that the species they maintain are “pure”. Unfortunately, there are no such guarantees
possible with most of the Victorians available today. The vast majority of Victorians have not been
scientifically classified and likely never will be, since wild stock from the
lake is far from abundant. Again, since
the lake is not that old, the differences between many similar species is very
subtle. It is virtually impossible to
tell the difference between many females and it is also nearly impossible to
identify many of the males unless they are in full breeding dress. Unless you are lucky enough to buy some of
the few wild exports, the only reliable source for “pure” Victorians is from
stock released from one of the LVSSP institutions or from one of the extremely
rare hobbyists who has maintained a colony for many, many years. This lack of certainty is often frustrating
to both those new to the world of Victorians as well as experienced hobbyists.
Victorian
cichlids are some of the most prolific cichlids you could possibly
maintain. I’ve had both Haplochromis sp. “finebar scrapper” and Astatotilapia aeneocolor breed at less
than 1” long and less than six months old.
The brood size is often less than a dozen, but they breed easily and
often. I’ve noticed that many of my
Victorians breed until they reach the age of around three years old. After that age breeding is either
non-existent or sporadic. Being a
breeder of Victorian cichlids is easy, but finding another responsible hobbyist
interested in maintaining and distributing an endangered species, can often be
challenging. Not every hobbyist wants to
dedicate an aquarium to a single species for a long period of time especially
if that species is not one of the more colorful ones. The demand for most Victorians is very low,
because the average hobbyist may never have heard of the species you have
available. Information is sparse, so even
with proper research, you may never know what species you have in your tank. Among the reasonably small community of avid
Victorian breeders, it is common to give them away to a good home rather than
sell them to some one you don’t know.
(With the exception of a few of the more popular and extremely colorful
species like Pundamilia nyererei) If the goal is to preserve the species, then
finding your brood a good home with another breeder is far more important than
maximizing your income.
I’ve told many people that to
maintain Victorians one needs to have a little different attitude. At least half of all the Victorians I’ve
purchased at any club auction or even from reliable breeders has been
incorrectly identified by the breeder and more than a handful have been obvious
hybrids. Unfortunately, that’s life as a
vic-lover. You just have to shrug your
shoulders and move on. If you keep one
of the less popular Victorian species, you may never know if it is indeed a
pure specimen and chances are pretty good that someone will tell you that you
have a hybrid. Most of us like to research
as much as we can about our aquarium residents, and the lack of adequate
information about Victorians can be frustrating. But seeing the unusually long extended fins
of a bright red male enticing his female is an incredible sight. And preserving a fish so close to possible
extinction in the wild has its rewards as well.
Kevin Bauman
www.african-cichlid.com