boy... I'm away for a few days and look what I miss! 8O
I think that everyone has pretty much covered everything (and kudos for everyone for being mature!), but I wanted to make one quick response to the original poster that I hope will help them understand a little more why we make so many cautionary posts to new members.
In your own post you offered the scenario of someone posting about putting an oscar in a 20 gallon tank. You stated yourself that if the oscar was only an inch or so he'd have plenty of room for only a couple months. Personally, i'm not that familiar with oscars so I'm going to go on your information as a hypothetical scenario.
For arguments sake, lets say I knew something about oscars, and knew, as you stated, it would outgrow a 20 gallon tank in a few months. If I were to read the post you gave as the example here's what would go through my head, .oO("hmm thats going to end up a large fish, I wonder if he plans on keeping it there or moving it to something bigger...") you said,
and thats exactly what we're working with. I don't know. I can't know unless I tackle that subject. As someone who wants to encourage others in the hobby, I feel an obligation to be sure new members (note, new
members, not new hobbyists) have all the information I can make available.
Given that I don't know what the example posters plans are, and given I want that person to have a long enjoyable relationship with his oscar and given that I want to ensure the fish itself has a long healthy life my response to the example post would include an answer to their direct question, as well as a cautionary comment about, "an oscar in a 20 gallon".
However that comment is made the intent is the same, "I don't know" so I have two options. Assume the poster is aware of the size of an adult oscar, or assume that the poster is not aware. If I assume they are aware, and I'm wrong, both the person and the fish suffer emotionaly and the fish could well suffer physicaly. However, if I assume they don't know and I caution them, if I'm right, I've helped them both. If I'm wrong, no harm is done, they simply reply, "don't worry about the 20
gal, thats just
QT for the next 2 months while my 600 gallon wall tank finishes cycling".
Thats the reasoning I use when replying to post from someone I'm not personally familiar with. I believe thats probably why others post that way as well. We're trying to encourage you by ensuring you have a successful experience.
so this was my opinion. I hope we have encouraged you (And those who felt discouraged) to stay an active member here. We look forward to helping in anyway we can. Now do me a favor and get that poor oscar out of that 20 gallon!