in the aquarium. Not only do they need regular access to things like
sheets of nori, but they also need a good supply of small, meaty foods
that are rich in vitamins.
The main cause of HHLLE can be summed up as “stress.” Personally,
I question whether P. hepatus is really a suitable aquarium fish. These
fish grow quite large, up to 12 inches ( 30 cm), need a constant rich diet
and a lot of swimming room, and juveniles are typically found in large
shoals. Adults tend to be found in smaller groups or pairs and seldom
alone. Kept individually, they’re stressed. Kept in too small a group,
and aggression issues come to bear. Kept in too small a tank, and they
simply don’t have the swimming room. All of these contribute to stress,
as well as its ill effects.
Clownfish Color Changes
When I bought my clownfish it was orange and
white, but over the past few weeks it has started
to turn black on top and down the sides.
Is this normal? It eats and swims fine, and actually uses my
frogspawn as a host. Did they accidently sell me a black clown? Is
it possible to have scored a juvenile black clownfish that is only
now showing its true colors, or is there something wrong with it?
via TFH Forum
With captive-bred clownfish, there can be a lot of flux
in their genetics. Sometimes these fish will change pattern
as they mature. As long as your fish is healthy, swimming,
and eating, I wouldn’t worry too much!
I found out that I have a shrimp farm not too far
from my house that raises jumbo shrimp, which I can
only assume are tiger prawns (Penaeus monodon). I
My tank also hosts a lot of other inverts. Has anyone had any
experience with tiger prawns in a reef tank?
via TFH Forum
This question reminds me of the episode of The Simpsons
in which Homer brings a tiny lobster home to grow out and
keep as a pet. I admit that I’ve also been curious to try
some of the unique animals that show up at the seafood
counter in my aquarium, though I’ve never seen live shrimp. The tiger
shrimp is one of the most commonly aquacultured animals in the world
and is widely farmed around the country. Although you may have
some trouble securing live animals in good shape, they should be able
to handle the average marine aquarium’s conditions. They have an
almost cosmopolitan distribution and are quite adaptable.
However, whether they will do well in your tank is debatable.
Keep in mind that these animals are farmed en masse for food, not
for long, healthy lives. Farmed shrimp may be host to a number of
parasites and diseases, which, while harmless to people, could wreak
havoc in an aquarium. (They’ve been cited as bringing down native
While we think of shrimp as being tiny, tiger prawns will reach a
size of about 12 inches ( 30 cm). They are predatory, and even a small
shrimp will pick off other small invertebrates, and eventually small
fish (and in the confines of an aquarium, perhaps even larger ones).
I would hate to see you lose a prized specimen to something that
should’ve been “thrown on the barbie”! D
The Vietnamese black tiger prawn (Penaeus monodon) can reach
an eventual size of 12 inches ( 30 cm).