So my Purple Bloom/P. "Machala" and Theraphosinae sp. "Roatan"/Roatan Island Purple are the same age but drastically different sizes.

[Arachnopotamus Rex]

They are both 9 and a half months old, the purple bloom has almost turned entirely brown (lost its purple and red striping) and is about 3 and a half inches, maybe 4?

The roatan is small enough to fit on my pinky nail and still very much looks like a typical tiny sling with its translucent tan body and black abdominal spot they get before molting.

Is the size difference and growth rates between these species that drastic? Or is my Roatan's growth stunted? I know P. Machala gets pretty big, but every T I have is quickly growing, except the Roatan...

Even my G. pulchripes has molted 3 times in the span that the roatan has molted once.

 

[viper69]

I never compare growth rates of different species- that makes zero sense

 

[Mustafa67]

They are both 9 and a half months old, the purple bloom has almost turned entirely brown (lost its purple and red striping) and is about 3 and a half inches, maybe 4?

The roatan is small enough to fit on my pinky nail and still very much looks like a typical tiny sling with its translucent tan body and black abdominal spot they get before molting.

Is the size difference and growth rates between these species that drastic? Or is my Roatan's growth stunted? I know P. Machala gets pretty big, but every T I have is quickly growing, except the Roatan...

Even my G. pulchripes has molted 3 times in the span that the roatan has molted once.

This can happen

 

[A guy]

It's like they're two completely different species in two completely different genera with two completely different growth rates

 

[Tentacle Toast]

My ex & I are eight days apart, & I'm like an entire human larger than her...

 

[Brewser]

There can be different characteristics / variables / outside influences affecting growth rates between two Members of the same Clutch.
Keep On Keep'n On.
p.s. does seem like a slow grower within the species however.

 

[Arachnopotamus Rex]

It's like they're two completely different species in two completely different genera with two completely different growth rates

Ikr? its almost as if i mentioned that already.

I think some people are failing at basic reading comprehension so let me be a bit more precise.

The question is "is it normal for the Roatan island purple to grow this slowly when cared for properly".
Obviously different individuals and species will have different growth rates and sizes, as I said in my opriginal post.

I merely mentioned a same aged different species and the nororiously slow growing grammastola genus (as well as all my other Ts molting and growing fine) for general reference (because it states that my environmental conditions/husbandry practices are up to par, so its not just starving or some other care based cause).

I'm genuinly concerned that this individual is sick or something, its the only one in my collection thats not growing. Does this species just grow extremely slow?

ps does seem like a slow grower within the species however.

Yeah thats what i'm concerned about, should I feed it more often to compensate? or no?

Update 1: its not interested in eating, hopefully that means premolt, but I rehoused it just incase there was some unknown issue in its enclosure.
Update 2: it finally ate.

 

[TheraMygale]

What is your feeding like? What are you feeding it? I am asking to get an overview, not to judge.

my g pulchripes molted almost 4 times since april. I have three, sac mates. They follow each other with a week or two difference. I know this will slow down very soon as winter is coming. And they are now over an inch, even if they are small.

edit: turn up the heat.

 

[A guy]

I think some people are failing at basic reading comprehension so let me be a bit more precise.

The question is "is it normal for the Roatan island purple to grow this slowly when cared for properly".
Obviously different individuals and species will have different growth rates and sizes, as I said in my opriginal post.

I merely mentioned a same aged different species and the nororiously slow growing grammastola genus (as well as all my other Ts molting and growing fine) for general reference (because it states that my environmental conditions/husbandry practices are up to par, so its not just starving or some other care based cause).

I'm genuinly concerned that this individual is sick or something, its the only one in my collection thats not growing. Does this species just grow extremely slow?

Like mentioned above, it can be extremely variable on the specimen. You simply cannot compare it to other specimens especially of other genera. I have 1/2" Aphonopelma specimens that haven't molted in years and I have subadult Aphonopelma that molts regularly.

 

[xenesthis]

This is like saying my gorilla grew larger than my gibbon. Roatan grows to maybe 5.5" and P. "machala" near 8".

 

[Ultum4Spiderz]

They are both 9 and a half months old, the purple bloom has almost turned entirely brown (lost its purple and red striping) and is about 3 and a half inches, maybe 4?

The roatan is small enough to fit on my pinky nail and still very much looks like a typical tiny sling with its translucent tan body and black abdominal spot they get before molting.

Is the size difference and growth rates between these species that drastic? Or is my Roatan's growth stunted? I know P. Machala gets pretty big, but every T I have is quickly growing, except the Roatan...

Even my G. pulchripes has molted 3 times in the span that the roatan has molted once.

This is normal , some species just grow slowly.

 

[Arachnopotamus Rex]

This is like saying my gorilla grew larger than my gibbon. Roatan grows to maybe 5.5" and P. "machala" near 8".

Actually its more like saying the gibbon is taking 10 times longer to reach adulthood than other gibbons even though I have the resources to feed a gorilla.