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AMAZONAS 70 Pairs of shell-dwelling cichlids, like the attractive Neolamprologus calliurus, are placed in small aquariums to breed. To create breeding pairs of the shell-dwelling cichlid Neolamprologus brevis, I select a large and a small individual from a group of fish of the same age and place them in a separate aquarium. Typically the pair hit it off right away and occupy the snail shells provided without problems. It is advisable to use the shells of French edible snails (escargots). The female always swims in first, then the male follows. The belly of the female becomes marbled yellow prior to spawning. It is difficult to establish the precise moment of spawning. The mother fish rarely leaves the shell. To see We use these clay pipes for breeding small cave-spawners that practice brood care. See opposite page, bottom. the developmental stage of the eggs you can carefully hold the shell up to the light, first making sure it is full of water. You will see either the eggs attached to the shell wall or the free-swimming fry. Rearing to saleable size takes place in Units 1 and 2, each containing 60 aquariums with a volume of 80 gallons (300 L) apiece. Pseudomugil gertrudae My breeding stock of Spotted Blue-Eyes, Pseudomugil gertrudae, are the local variant Aru II, from the Indonesian Aru Islands south of New Guinea. In April 2009 we obtained 30 specimens about 1.25 inches (3 cm) long. They were fed with Artemia nauplii and Cyclops. I began the first breeding attempts after three weeks, placing a wool spawning mop in the aquarium and weighing it down with a stone. After eight days I removed the mop. On examining the strands I discovered shiny eggs, 1 mm across, everywhere. The next day I discovered the first 3-mm-long youngster. More little P. gertrudae appeared every day. The hatch didn’t end after eight days, as expected, but continued for a few days longer. With this peaceful aquarium fish, the difference in size resulting from the different hatching times doesn’t matter. I feed the fry
with infusorians and Artemia nauplii. After two months some of the young have attained a size of .75 inch (2 cm) and the males are already developing their splendid finnage. Fundulopanchax gardneri I keep the sexes of our Fundulopanchax gardneri separated. There are four adjacent, shallow aquariums, one for The Peacock Gudgeon, Tateurndina ocellicauda, is bred regularly. Neolamprologus pulcher “Daffodil” is one of the Lake Tanganyika cichlids that we breed regularly. The photo shows a pair with tiny fry. males and three others holding 10 to 12 females apiece. The fishes are fed heavily for two weeks in order to condition them for breeding. Thereafter I fill the aquariums occupied by the females with a layer of boiled peat granules, 1.25–1.5 (3–4 cm) thick, and add the males. They are fed with live glassworms so that no leftover food can accumulate in the spawning substrate. Ten days after the start of the breeding attempt I AMAZONAS 71
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FRESHWATER AQUARIUMS & TROPICAL DIS
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EDITORIAL AMAZONAS 4 Dear Reader, A
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AQUATIC AMAZONAS 6 NOTEBOOK by Dr.
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AMAZONAS 8 TM Top: Xingu version of
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AQUATIC AMAZONAS 10 NOTEBOOK A new
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AQUATIC AMAZONAS 12 NOTEBOOK the mi
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AQUATIC AMAZONAS 14 Right: Preserve
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AMAZONAS 16 AQUATIC Peckoltia otali
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AQUATIC AMAZONAS 18 NOTEBOOK artic
Page 20 and 21: 20 Does size matter to you ? We bet
Page 22 and 23: AMAZONAS 22 Revolutionary Lighting
Page 24 and 25: AMAZONAS 24 COVER STORY Pterophyllu
Page 26 and 27: AMAZONAS 26 Pterophyllum altum from
Page 28 and 29: AMAZONAS 28 base of the dorsal fin.
Page 30 and 31: AMAZONAS 30 scientific literature.
Page 32 and 33: AMAZONAS AMAZONAS 32 A life with an
Page 34 and 35: AMAZONAS 34 Above, left to right: O
Page 36 and 37: AMAZONAS 36 tions to produce good f
Page 38 and 39: AMAZONAS 38 Unfortunately, the tank
Page 40 and 41: AMAZONAS 40 some of the young in ou
Page 42 and 43: AMAZONAS 42 COVER STORY Pterophyllu
Page 44 and 45: AMAZONAS 44 Wild-caught pair from t
Page 46 and 47: AMAZONAS 46 Above: The young are fe
Page 48 and 49: AMAZONAS 48 COVER STORY Angelfish:
Page 50 and 51: AMAZONAS 50 Despite this preservati
Page 52 and 53: AMAZONAS 52 Stephens really hits ho
Page 54 and 55: AMAZONAS 54 Some of the latest exam
Page 56 and 57: AMAZONAS 56 Slavkov’s Bulgarian G
Page 58 and 59: FISHKEEPING BASICS Common health pr
Page 60 and 61: AMAZONAS 60 Inspired by Mother Natu
Page 62 and 63: AMAZONAS 62 Avoiding trouble As lon
Page 64 and 65: AMAZONAS 64 their introduction befo
Page 66 and 67: AMAZONAS 66 FISH ROOM TOUR article
Page 68 and 69: AMAZONAS 68 A female Aulonocara jac
Page 72 and 73: AMAZONAS 72 Above: Pseudomugil gert
Page 74 and 75: AMAZONAS 74 HUSBANDRY & BREEDING Wi
Page 76 and 77: AMAZONAS 76 Above, left to right: I
Page 78 and 79: AMAZONAS 78 HUSBANDRY Chilatherina
Page 80 and 81: AMAZONAS 80 The next morning, thoug
Page 82 and 83: AMAZONAS 82 From Thailand New Snake
Page 84 and 85: AMAZONAS 84 It wasn’t long before
Page 86 and 87: AMAZONAS 86 Above: The young of Cha
Page 88 and 89: 88 UNITED STATES Arizona Aqua Touch
Page 90 and 91: AMAZONAS 90 SPECIES SNAPSHOTS ➊ T
Page 92 and 93: AMAZONAS 92 SPECIES SNAPSHOTS Hypop
Page 94 and 95: SOCIETY AMAZONAS 94 CONNECTIONS U.S
Page 96 and 97: 24/7 VISIT OFTEN: • Web-Special A
Page 98: AMAZONAS 98 UNDERWATER EYE Mustard
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