? red datnoid

[dovii88]

I have a question does anyone have any info at all on red datnoids they were on the fish list at my work and i wanted to know some info on them, and wat the tank should be like also any pics.... thnx!! :confused:

[Steve_89]

I think you will find that it is a mangrove jack (Lutjanus Argentimaculatus)

They do resemble a datnoid when young, but when they get older they lose that appearance.

[Steve_89]

They also become brackish once older.

[DiXoN]

yep steve is right there mangrove jacks and they do like salt

[dovii88]

thnx

[Mahseer]

They can also be highly aggressive even when little. You generally can only keep one per tank.

[dovii88]

so wait can i keep them in like a nice planted tank as juv. and them move them up to a large tank when they get bigger.... and also do they need to into brackish.... and how big do they get....

[Michael 125]

does anyone know where i can find then to purchase? i live in S. Fl. and would really likr to have one. i had one a while back but it died of unknown reasons and ever since then i have been looking for them at my lfs. thanks

[Steve_89]

Yes they do need salt when they get older, I forget how much my mates keep them in but its not full salt.

[ashdavid]

Yes they do need salt when they get older, I forget how much my mates keep them in but its not full salt.

As Steve said they will need brackish as they get older and some will tend to do better in full salt, but do not be mistaken these fish will die in full freshwater. I had one that grew to about 30". As for how big they grow, over 4' can sometimes be seen with these fish, but are more common around the 3' mark.

[toxicfish]

As Steve said they will need brackish as they get older and some will tend to do better in full salt, but do not be mistaken these fish will die in full freshwater. I had one that grew to about 30". As for how big they grow, over 4' can sometimes be seen with these fish, but are more common around the 3' mark.

got any pics of one that big

[ashdavid]

That was about ten years ago, and I didn't know about sites like this were available on the internet, so no pics ,sorry. I had to get rid of it b/c it was getting too big for the tank I had at the time, a real shame really, b/c it took me about 7 years to get it that big.

[Steve_89]

THis one was at a public aquarium....

One of the nicest I have seen.

[Stone Like Fish]

they are more common around the 18"

[fugupuff]

here's mine, roughly 16" , got there in one year

[guppy]

from fishbase


Family: Lutjanidae (Snappers), subfamily: Lutjaninae picture (Luarg_u5.jpg) by Cook, D.C.

AquaMaps* Map
Order: Perciformes (perch-likes)
Class: Actinopterygii (ray-finned fishes)
FishBase name: Mangrove red snapper
Max. size: 150 cm TL (male/unsexed; Ref. 3678); max. published weight: 8,700 g (Ref. 40637); max. reported age: 18 years
Environment: reef-associated; oceanodromous (Ref. 51243); freshwater; brackish; marine; depth range 10 – 120 m
Climate: subtropical; 16 – 30°C; 32°N - 24°S, 40°E - 180°E
Importance: fisheries: commercial; aquaculture: commercial; gamefish: yes
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years(K=0.19; tmax=18)
Distribution:
Gazetteer Indo-West Pacific: East Africa to Samoa and the Line Islands, north to the Ryukyu Islands, south to Australia. Has dispersed into the eastern Mediterranean (off Lebanon) via the Suez Canal but not well established there.
Morphology: Dorsal spines (total): 10 - 10; Dorsal soft rays (total): 13 – 14; Anal spines: 3; Anal soft rays: 7 – 8. Preopercular notch and knob poorly developed. Scale rows on back more or less parallel to lateral line, or parallel below spinous part of dorsal fin and sometimes rising obliquely posteriorly, or rarely with entirely oblique rows. Generally greenish brown on back, grading to reddish on sides and ventral parts. Trawl specimens from deep water frequently are reddish with dark scale centers and white scale margins, giving a reticulated appearance. Juveniles with a series of about eight whitish bars crossing sides, and 1 or 2 blue lines across cheek. L. argentimaculatus distinguished from the L. bohar by its longer snout and truncate tail and more bronze to greenish coloration (Ref. 37816).
Biology: A euryhaline species (Ref. 12743). Juveniles and young adults occur in mangrove estuaries and in the lower reaches of freshwater streams (Ref. 30573, 48635). Adults are often found in groups around coral reefs (Ref. 9710). Eventually migrate offshore to deeper reef areas, sometimes penetrating to depths in excess of 100 m. Mainly nocturnal, this species feeds mostly on fishes and crustaceans. Excellent food fish (Ref. 5484). An important market species throughout the Indo-Pacific region, but never found in large quantities. A good aquaculture species because it doesn’t get rancid easily when frozen (Ref. 47992). It commands a good export market price with no limit on body size (Ref. 47992). No reported damaging diseases (Ref. 47992). Found in Hong Kong live fish markets (Ref. 27253).

[Steve_89]

here's mine, roughly 16" , got there in one year

How much salt are you putting in with that guy??

[ashdavid]

How much salt are you putting in with that guy??

And what are the dimensions of that tank?

[fugupuff]

And what are the dimensions of that tank?

cube tank, 24"x24"x24" :grinyes: :grinyes:

[fugupuff]

And what are the dimensions of that tank?

to the above post, no, its 96x24x30 = 300 gallons, with another 100 gallon water in the filter compartments.

salt...just a bit, maybe a handful total, maybe not, I did a few water changes and didn't have any salt handy...oops.... :screwy: :screwy: :screwy:

[ashdavid]

cube tank, 24"x24"x24" :grinyes: :grinyes:

:ROFL:
It looks like it is that size too!!! :banhim: Just kidding:hitting:

:topic: They are some nice nile perch's you have there, what size are all of them? And how long did it take to get them that size?

[fugupuff]

hey ashdavid, you've impressed me quite a bit yourself. are you in japan now, can you post some pictures of the fish from local stores in japan?

the perches in there are all in the 14-16" range. they all got to that size in less than 2 years, and i've cut back on feeding. the barramundi went from 10" to 18" in less than one year, and it seems like he's not going to slow down. my 2 niles are a bit slower, went from 4" to 14, 16" in a year and half or so. the lutjanus was only 3" when I put him in there, I put 2 in there, and one got eaten within a few days, and this one always dodged around the big datnoid, and one day I noticed this big bully, chasing my nile perch all around the tank, and it was him!!! In between, it was all a blurr, don't remember him growing up, maybe someone just put a big one in there when I wasn't watching!

[ashdavid]

Thanks for the compliment, but I like your selection of fish. Nile perch's seem to be slow growers, does yours eat a lot or does it get beaten to the food by the other fish? My lutjanus grew really fast at first but really slowed down at the two foot mark,it took me about three years to get him from 24" to about 30" or there abouts, but he got really bulky in that time.

Yes I am in Japan now. What fish do you want to see?

[rumblesushi]

ash - what is that weird looking marbled wolf in your avatar? :) And where did you move to Japan from?

[ashdavid]

ash - what is that weird looking marbled wolf in your avatar? :) And where did you move to Japan from?

It is a lower xingu macrophthalmus(goliath wolf,adult size 4' and over).

[rumblesushi]

looks like an awesome wolf - do you still have it?

[ashdavid]

looks like an awesome wolf - do you still have it?

No he died last week, due to a faulty heater. But I have another coming this week. I was very lucky, these fish are very rare(I have only seen these being imported once in 4 years), but one of my mates had one that he could not house properly so he sold it to me.