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Author Topic: Cichla (Anakonda, pirane i ciklidi...)  (Read 12164 times)

Offline piroman

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Re: Anakonda, pirane i ciklidi...
« Reply #10 on: 10 December, 2004, 03:36:06 »
Evo sta fishbase.org kaze:

Cichla  ocellaris  Bloch & Schneider, 1801    
Family:    Cichlidae (Cichlids) , subfamily: Cichlinae  picture (Cioce_u0.jpg) by JJPhoto
 
Map  
Order:   Perciformes  (perch-likes)  
Class:   Actinopterygii (ray-finned fishes)  
FishBase name:  Peacock cichlid
Max. size:   74.0 cm TL (male/unsexed; Ref. 40637); max. published weight: 6,800 g (Ref. 40637)
Environment:   benthopelagic; freshwater; brackish ; depth range - 5 m  
Climate:  tropical; 24 - 27°C; 26°N - 9°S
Importance:  fisheries: minor commercial; aquaculture: commercial; gamefish: yes; aquarium: commercial
Resilience:   High, minimum population doubling time less than 15 months (Assuming tm=1; multiple spawning per year; Fec=9,000-15,000)
Distribution:  
Gazetteer  South America: Marowijne drainage in Suriname and French Guiana to the Essequibo drainage in Guyana.  
Morphology:   Appears basically yellow with a dark green back and white belly; eyes reddish with several dark vertical bands extending partially down the sides of the body; males with prominent hump on the nape; distinct black "eye spot" on the tail, from which the fish got its name (Ref. 44091).  
Biology:   Forms schools (Ref. 9086). Occurs in the rapids, in quiet waters with medium depth and rocky substrates (Ref. 35237). Feeds only on small fish, especially threadfin shad, mosquito fish, tilapia and bluegill. Not considered ideal for aquaculture due to its highly predatory habits (Ref. 1739). Reproduction occurs year-round, with a peak at the start of the rainy season. About 9,000 to 15,000 eggs per kg are released during spawning. Spawning takes place every two months on a flat stone in shallow water. The sticky eggs, measuring 1.4 mm in diameter, take 78 hours to hatch at 28°C.  
Red List Status:  Not in IUCN Red List  , (Ref. 36508)  
Dangerous:   potential pest
Pozz
Piroman



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Re: Anakonda, pirane i ciklidi...
« Reply #11 on: 10 December, 2004, 03:38:59 »
mene najvise zbunjuje pirana , ja bih se zakleo da je ona ciklid ali eto vodi se da nije. A kad je pogledas kako cuva ikru, bas kao ciklid, i dosta drugih stvari radi kao ciklid

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Re: Anakonda, pirane i ciklidi...
« Reply #12 on: 10 December, 2004, 03:44:08 »
znam sve to , imam genijjalnu sliku ove ribe kod kuce podici cu je oko 14-15 sati

Offline piroman

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Re: Anakonda, pirane i ciklidi...
« Reply #13 on: 10 December, 2004, 03:58:12 »
Quote

amazon wrote:
mene najvise zbunjuje pirana , ja bih se zakleo da je ona ciklid ali eto vodi se da nije. A kad je pogledas kako cuva ikru, bas kao ciklid, i dosta drugih stvari radi kao ciklid


Pazi ako pogledas vilicu pirane, videces anatomski portpuno drugaciju stvar od ciklida, druga pitanje je da li pirana uopste ima dva para vilica?
Pozz
Piroman



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Re: Anakonda, pirane i ciklidi...
« Reply #14 on: 10 December, 2004, 04:12:09 »
ma dobro imas pravo, ali eto zbunilo me pravo kad sam gledao film o piranama, gdje ona stoji iznad ikre i brani je, kao da gledam ciklida

Offline tihomir

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Re: Anakonda, pirane i ciklidi...
« Reply #15 on: 11 December, 2004, 02:26:03 »
Tacno ciklid,i jos ga ima po aquarijumima! cena na netu 2o$.

Offline piroman

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Re: Anakonda, pirane i ciklidi...
« Reply #16 on: 11 December, 2004, 08:17:38 »
Ne razumem sta si hteo da kazes Tihomire?
Pozz
Piroman



Offline JZH

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Text:"Scientists study spawning Cichla", PFK, SEP 2006!
« Reply #17 on: 14 September, 2006, 18:25:37 »
Veoma zanimljiv tekst! CIKLID_166

Scientists study spawning Cichla

Scientists have studied the reproduction of one of the world's largest cichlid species - the tucanare, Cichla aff. monoculus.

Munoz, van Damme and Duponchelle studied the breeding behaviour and distribution of a form of Cichla they refer to as Cichla aff. monoculus, which occurs in the waters of the Rio Paragua in Bolivia, South America.

The study found that the cichlid was most common in the smaller remnant channels, rather than the main river itself, as well as in isolated lakes. The specimens in the main river spawned a month later than those fish living in the channels or lakes, and also constructed different shaped nests. The fish in the isolated lakes dug deeper, larger nests than the fish living in the river or its channels. Brood sizes in the species are vast with 460g females producing on average 3712 eggs per spawning, and larger females weighing in at 1.38kg laying 10,355 on average.


Nest building
The study provides an interesting insight into the reproduction of the fish, which may be of use to any fishkeepers attempting to spawn the species. Both male and female were involved in the digging of the nesting pit and the cleaning of the ground to remove organic matter from the spawning site. Cichla aff. monoculus constructs a large circular nest just under 2m/6'6" in diameter, which contains a central depression of 20-100cm/10-39" deep.

Cichla aff. monoculus seems to prefer building its nest around branches or sticks that protrude from the substrate. Out of 291 nests examined, a massive 279 of them were dug around a slender branch with a diameter of 3-30cm/1.5-12" which was usually buried in the substrate at one end.

During the breeding season, the fish breeds in close proximity to other Cichla, and a 50m2 area can contain as many as 18 nests, usually separated from each other by a metre or so of no-man's land. The species also has a penchant for deeper water, and does not spawn in water less than 1m/39" deep.


Spawning
After the pair had constructed their nest, the female laid up to 10,000 eggs on the branch, often covering it completely if the branch was relatively small. Both parents defend the nest when an intruder comes within 2m/6'6" of the spawning site. Although both sexes would leave the nest to defend the clutch, she was always the last to leave the eggs and was always the first to return to the brood.

The authors state that as soon as the female leaves the nest, small tetras of the characid family rush in and try to steal the brood, but quickly disperse when she returns.

After the eggs hatched, the fry stayed within the deep part of the nests below the branch, where they swam under the close supervision of their parents.

Like other members of the Cichla genus, aff. monoculus shows sexual dimorphism, with males reaching a large size and developing a nuchal hump which is not usually seen in females, except on rare occasions.


How many Cichla?
The taxonomy of the Cichla genus is complex and all species can be difficult to identify. There are currently five species: Cichla ocellaris, Cichla temensis, Cichla orinocensis, Cichla intermedia and Cichla monoculus.

Kullander and Nijssen (1989) suggested that the genus may contain a further six undescribed species, however, recent studies have shown that Cichla form natural hybrids in nature, and some of the fish currently regarded as new species may in fact by hybrids.

For more details on the study see the paper: Munoz H, van Damme PA, and F Duponchelle (2006) - Breeding behaviour and distribution of the tucanare Cichla aff. monoculus in a clear water river of the Bolivian Amazon. Journal of Fish Biology (2006) 69, 1018-1030.
Pozdrav, Joca

Offline JZH

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Re: Text:"Scientists study spawning Cichla", PFK, SEP 2006!
« Reply #18 on: 14 September, 2006, 18:30:34 »
Par slika... CIKLID_106
Pozdrav, Joca

Offline JZH

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Re: Text:"Scientists study spawning Cichla", PFK, SEP 2006!
« Reply #19 on: 14 September, 2006, 19:16:17 »
... CIKLID_111
Pozdrav, Joca

 

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