Another Venustus Thread
- Thread starter caribfan
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HPark
New member
tbh, when I tried mine, it developed ich after the second or third day in a 20g tank with tons of live rock. In hindsight, I would have placed it in a more bare QT because it was a pain to capture. If I tried again, I'd probably treat it like any other fish and start TTM after purchase.
Me too! I may try to look locally or just wait for DD. Though I am tempted to just wait for the next round of Joc's so who knows.
Me too! I may try to look locally or just wait for DD. Though I am tempted to just wait for the next round of Joc's so who knows.
Quick Update:
I noticed the little one of the three hasn't been eating so well and seems to be going after only the tiniest of food pieces, so I picked up some cyclopeeze this afternoon. Multiple feedings later and he seems to really prefer the small particle size.
The other two have great appetites and none of the fish show any signs of distress or parasite infections. I plan to keep feedings heavy and frequent. I'm also sticking to a pretty strict water change schedule of every 4 - 5 days at this point.
I noticed the little one of the three hasn't been eating so well and seems to be going after only the tiniest of food pieces, so I picked up some cyclopeeze this afternoon. Multiple feedings later and he seems to really prefer the small particle size.
The other two have great appetites and none of the fish show any signs of distress or parasite infections. I plan to keep feedings heavy and frequent. I'm also sticking to a pretty strict water change schedule of every 4 - 5 days at this point.
Ambition
New member
Other than size, there isn't anything that distinguishes male from female. Although, Karen noted a white bar towards the caudal fin on her female IIRC.
I'm glad they are doing well for you. My smaller multibar is by far more picky than the larger one. The pieces of food have to be the right size and shape I have noticed. Now to find an affordable way to get myself some LRF for the multibars.
I'm glad they are doing well for you. My smaller multibar is by far more picky than the larger one. The pieces of food have to be the right size and shape I have noticed. Now to find an affordable way to get myself some LRF for the multibars.
The following is not mine, I cut/paste an excerpt from a brief article I believe written by Matt Pedersen, located at this Link:
http://www.marinebreeder.org/forums/viewtopic.php?t=142
These are generalities for most of the Centropyge species. However noting that Venustus' are often found in harems, and that they are Protogynous Hermaphrodites, I believe that the only true way to determine who's who, regarding sex, would be to start with a small group of one slightly large specimen, and several smaller specimens. The references M.Pedersen used to gather the below information are also available on the link I provided. Apparently the sex reversal can go in either direction, with one direction taking quite longer than the other.
"
3 – Reproduction:
3.1 – Sex determination:
Sequential hermaphrodites (protogynous). Once sex reversal starts, it takes around 15-30 days to get finished.
However, at least C. ferrugata males can also undergo complete sex reversal back to female, which takes up to 90 days to finish.
3.2 – Sexual organization:
Pairs or multi-females harems (up to 7 individuals, depending on the species).
3.3 – Sexing:
As with many protogynous species, males are usually larger than females.
Some species have sexual dichromatism like what´s said about Flame Angelfishes (Centropyge loriculus); The males seem to have more blue on the soft dorsal and anal, and seem to have pointed soft dorsal and anal fins instead of rounded.
For Potter's Angelfish (Centropyge potteri), it is is said that "The orange darkens to bluish black on much of the lower side and this dark area is larger in males than in females, making them easy to distinguish in the field (i.e. females show more orange)....Males have more blue on the fins than females and their bodies are slightly more elongate." at http://www.hawaiisfishes.com/fish_of_mo ... _04_04.htm
I (Matt) can also personally add that in my spawning trio of Centropyge argi, the male does seem to have a more elongate body shape and is significantly larger than the females at this time.
3.4 - Pairing / Setting Up Broodstock:
As a general rule, chosing a large specimen and one or more "small" specimens will set you up with a pair/harem. These should be added to the aquarium at the same time. The smallest species (i.e. C. argi, C. fisheri) can be set up, maintained and spawned in aquariums as small as 20 gallons (provided their is adequate height for the spawning rise). Aquariums 55 gallons and larger may be required for the larger species. There is a "rumor" that insufficient tank height may impact fertility of spawns, so a broodstock tank with "ample height" is something to consider when setting up for breeding.
3.5 – Courtship:
Courtship in C. argi commenses as earily as 1 hour before "lights out". The male of C. argi even undergoes a color transformation with a dramatic lightening of the blue flanks to a near-white coloration. The male actively "soars", displays to females and may make false spawning rises in the aquarium.
3.6 – Spawning:
Pelagic spawners.
Depending on the species, or perhaps even the particular "couple" spawning will occur around "lights out" (i.e. in C. argi spawning typically cocurs within a few minutes of "lights out"). The female rises into the open water column, the male following behind, nuzzleing the abdomen of the female. What follows takes less than a couple seconds - It is said that the actual spawning is then initiated by the male ramming/bumping the female's abdomen, then quickly changing position to line up genital openings, followed by a release of eggs and sperm, concluded with a quick dash back to the safety of "reef". The boyant eggs float to the surface. "
This is a bit from Fishbase.org regarding Centropyge venusta's Biology:
Link: http://www.fishbase.org/summary/11189
"Biology Glossary (e.g. epibenthic)
Inhabits steep outer reef slopes (Ref. 9710); in ledges and caves (Ref. 48391). Shy species, not easily approached at close range (Ref. 4537). Usually observed singly, almost always upside down in reef caves (Ref. 47838); also forms pairs or small groups (Ref. 48391). Natural diet unknown (Ref. 48391). Sometimes forms hybrids with Centropyge multifasciata (Ref. 48391). Occasionally exported through the aquarium trade."
http://www.marinebreeder.org/forums/viewtopic.php?t=142
These are generalities for most of the Centropyge species. However noting that Venustus' are often found in harems, and that they are Protogynous Hermaphrodites, I believe that the only true way to determine who's who, regarding sex, would be to start with a small group of one slightly large specimen, and several smaller specimens. The references M.Pedersen used to gather the below information are also available on the link I provided. Apparently the sex reversal can go in either direction, with one direction taking quite longer than the other.
"
3 – Reproduction:
3.1 – Sex determination:
Sequential hermaphrodites (protogynous). Once sex reversal starts, it takes around 15-30 days to get finished.
However, at least C. ferrugata males can also undergo complete sex reversal back to female, which takes up to 90 days to finish.
3.2 – Sexual organization:
Pairs or multi-females harems (up to 7 individuals, depending on the species).
3.3 – Sexing:
As with many protogynous species, males are usually larger than females.
Some species have sexual dichromatism like what´s said about Flame Angelfishes (Centropyge loriculus); The males seem to have more blue on the soft dorsal and anal, and seem to have pointed soft dorsal and anal fins instead of rounded.
For Potter's Angelfish (Centropyge potteri), it is is said that "The orange darkens to bluish black on much of the lower side and this dark area is larger in males than in females, making them easy to distinguish in the field (i.e. females show more orange)....Males have more blue on the fins than females and their bodies are slightly more elongate." at http://www.hawaiisfishes.com/fish_of_mo ... _04_04.htm
I (Matt) can also personally add that in my spawning trio of Centropyge argi, the male does seem to have a more elongate body shape and is significantly larger than the females at this time.
3.4 - Pairing / Setting Up Broodstock:
As a general rule, chosing a large specimen and one or more "small" specimens will set you up with a pair/harem. These should be added to the aquarium at the same time. The smallest species (i.e. C. argi, C. fisheri) can be set up, maintained and spawned in aquariums as small as 20 gallons (provided their is adequate height for the spawning rise). Aquariums 55 gallons and larger may be required for the larger species. There is a "rumor" that insufficient tank height may impact fertility of spawns, so a broodstock tank with "ample height" is something to consider when setting up for breeding.
3.5 – Courtship:
Courtship in C. argi commenses as earily as 1 hour before "lights out". The male of C. argi even undergoes a color transformation with a dramatic lightening of the blue flanks to a near-white coloration. The male actively "soars", displays to females and may make false spawning rises in the aquarium.
3.6 – Spawning:
Pelagic spawners.
Depending on the species, or perhaps even the particular "couple" spawning will occur around "lights out" (i.e. in C. argi spawning typically cocurs within a few minutes of "lights out"). The female rises into the open water column, the male following behind, nuzzleing the abdomen of the female. What follows takes less than a couple seconds - It is said that the actual spawning is then initiated by the male ramming/bumping the female's abdomen, then quickly changing position to line up genital openings, followed by a release of eggs and sperm, concluded with a quick dash back to the safety of "reef". The boyant eggs float to the surface. "
This is a bit from Fishbase.org regarding Centropyge venusta's Biology:
Link: http://www.fishbase.org/summary/11189
"Biology Glossary (e.g. epibenthic)
Inhabits steep outer reef slopes (Ref. 9710); in ledges and caves (Ref. 48391). Shy species, not easily approached at close range (Ref. 4537). Usually observed singly, almost always upside down in reef caves (Ref. 47838); also forms pairs or small groups (Ref. 48391). Natural diet unknown (Ref. 48391). Sometimes forms hybrids with Centropyge multifasciata (Ref. 48391). Occasionally exported through the aquarium trade."
Looked at your video again of the trio. They are fantastic!! I'd be willing to bet that the Large one will remain a dominant male, and the smallest one a sub/dominant female and the middle sized fish may go either dominant female or sub-dominant male. The variations in size are a good thing IMO.
Best of luck. Gorgeous fish!!
Best of luck. Gorgeous fish!!
Thanks Gris, I'm pretty happy with them . If I finish up the plumbing on my 240 tonight I'll try to take another video during feeding time. That little one really prefers the cyclopeeze. Hard to believe such a small thing can sustain that fish, hopefully he'll start eating the LRS food with more gusto soon
http://https://www.youtube.com/watch?v=y3sIKHnzOpU
You can see the smallest of the three around the 20 second mark.
You can see the smallest of the three around the 20 second mark.
Hah, yeah, well it's all relative I suppose ..... I've spent a small fortune on stereo gear too .... and it doesn't get ich :lol:
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