assimilation efficiency 152,154-5
autoallergic properties of mucus 313
biomass and salinity changes 39
breeding behavior studies 44-6
breeds when small 186
cage culture 206,218-20,240-5
carrying capacities in pond culture 187
in coastal waters near Port Elizabeth 34
depth restricts feeding 42
depth in L. Sibaya 32
depth of water in cage culture 209
detritus and feeding 179
diet 144
digestion 146-9,341
distribution 20-1,52,86
diurnal feeding 43
diurnal movements in L. Sibaya 53
dug out of dry river beds alive 126
ecological studies 96-7
euryhaline 38,121
eurythermal37
extensive cage culture 216-20
feeding of alevins 42
feeding and fecundity 318
feeding in L. Sibaya 42
fish culture 11
flexibility in timing of reproduction
339
food quality studies in L. Sibaya 153
In geothermal water 29
growth rates 103,105
guarding the young 48
home range and homing in L. Sibaya 55
hormone treatments for monosex
culture 312
intensive cage culture 235
introductions 21,24-8,57,86
introductions that failed 55
jaw teeth 143
L. Kariba 337
L. Kitangiri 39
R. Kongie 37
larval production in floating cages 213
lethal infections 249
long intestine 142
L. Magadi 40
manure in pond culture of 197-8
L. Manyara 39
maternal mouthbrooder 7
metabolic studies 160-2
metacercarial infection and
blindness 252
mortalities and bodinid parasites 249
L. Moyua 28,46,102
mucus can induce and anaphylactic
reaction 260
Namib desert water bodies 25
nutritional requirements 346
omnivorous 41
oxygen tolerance 40,122
parasitism and strains A and B 336
pest in Chanos ponds 28
pharyngeal teeth 143
pituitary gonadotropins 136
Plover Cove reservoir 28,101-2
pond culture 198
population parameters 75
predation in L. Sibaya 338
production of all-male hybrids 310
reproduces in seawater ponds 122
reproduction and salinity 314
L. St. Lucia 39
salinity tolerance 37-9,124
schooling of juveniles 54
seasonal changes in habitat 52
selective feeding for maximum growth
154-6
semi-intensive cage culture 223-4
R. Serang 25
sex determination 275-6
R. Shire 52
L. Sibaya 32,42,47,52-3,55, 75-7,
338
southernmost natural occurrence
34,37
spawning behavior in L. Sibaya 47
spawning frequency 134,339
spinal deformities 258
strains A and B and monogenean
infections 336
stunting in Malawi 187
swimbladder as an oxygen store 127
not accepted in Thailand 57
R. Thalamakane 25
lower temperature limits sum-
marized 125
temperature and salinity tolerance 37
temperature and swimming per-
formance 34
temperature tolerance 35,52,121
unable to adapt to pressure 32
L. Valencia 147-9, 154-5
water currents 51-2
white spot 248
wounded fish 49
in Middle Zambezi basin 24-5
in Zambezi system 25,96,332
S. multifasciatus, L. Bosumtwi 33,46, 53